diff --git a/app/controllers/ajax/mute_rule_controller.rb b/app/controllers/ajax/mute_rule_controller.rb
new file mode 100644
index 00000000..e0db82f4
--- /dev/null
+++ b/app/controllers/ajax/mute_rule_controller.rb
@@ -0,0 +1,67 @@
+class Ajax::MuteRuleController < AjaxController
+  def create
+    params.require :muted_phrase
+
+    unless user_signed_in?
+      @response[:status] = :noauth
+      @response[:message] = I18n.t('messages.noauth')
+      return
+    end
+
+    rule = MuteRule.create!(user: current_user, muted_phrase: params[:muted_phrase])
+    @response[:status] = :okay
+    @response[:success] = true
+    @response[:message] = "Rule added successfully."
+    @response[:id] = rule.id
+  end
+
+  def update
+    params.require :id
+    params.require :muted_phrase
+
+    unless user_signed_in?
+      @response[:status] = :noauth
+      @response[:message] = I18n.t('messages.noauth')
+      return
+    end
+
+    rule = MuteRule.find(params[:id])
+
+    if rule.user_id != current_user.id
+      @response[:status] = :nopriv
+      @response[:message] = "Can't edit other people's rules"
+      return
+    end
+
+    rule.muted_phrase = params[:muted_phrase]
+    rule.save!
+
+    @response[:status] = :okay
+    @response[:message] = "Rule updated successfully."
+    @response[:success] = true
+  end
+
+  def destroy
+    params.require :id
+
+    unless user_signed_in?
+      @response[:status] = :noauth
+      @response[:message] = I18n.t('messages.noauth')
+      return
+    end
+
+    rule = MuteRule.find(params[:id])
+
+    if rule.user_id != current_user.id
+      @response[:status] = :nopriv
+      @response[:message] = "Can't edit other people's rules"
+      return
+    end
+
+    rule.destroy!
+
+    @response[:status] = :okay
+    @response[:message] = "Rule deleted successfully."
+    @response[:success] = true
+  end
+end
diff --git a/app/controllers/ajax/question_controller.rb b/app/controllers/ajax/question_controller.rb
index c3c34737..9a140bef 100644
--- a/app/controllers/ajax/question_controller.rb
+++ b/app/controllers/ajax/question_controller.rb
@@ -66,7 +66,9 @@ class Ajax::QuestionController < AjaxController
         return
       end
 
-      Inbox.create!(user_id: u.id, question_id: question.id, new: true)
+      unless MuteRule.where(user: u).any? { |rule| rule.applies_to? question }
+        Inbox.create!(user_id: u.id, question_id: question.id, new: true)
+      end
     end
 
     @response[:status] = :okay
diff --git a/app/controllers/user_controller.rb b/app/controllers/user_controller.rb
index edf88087..dcb5c57c 100644
--- a/app/controllers/user_controller.rb
+++ b/app/controllers/user_controller.rb
@@ -224,4 +224,10 @@ class UserController < ApplicationController
     @recovery_keys = TotpRecoveryCode.generate_for(current_user)
     render 'settings/security/recovery_keys'
   end
+
+  # region Muting
+  def edit_mute
+    @rules = MuteRule.where(user: current_user)
+  end
+  # endregion
 end
diff --git a/app/javascript/packs/application.ts b/app/javascript/packs/application.ts
index 3fa1a7a6..41a9f0fb 100644
--- a/app/javascript/packs/application.ts
+++ b/app/javascript/packs/application.ts
@@ -2,10 +2,12 @@ import start from 'retrospring/common';
 import initAnswerbox from 'retrospring/features/answerbox/index';
 import initInbox from 'retrospring/features/inbox/index';
 import initUser from 'retrospring/features/user';
+import initSettings from 'retrospring/features/settings/index';
 import initLists from 'retrospring/features/lists';
 
 start();
 document.addEventListener('turbolinks:load', initAnswerbox);
 document.addEventListener('turbolinks:load', initInbox);
 document.addEventListener('DOMContentLoaded', initUser);
+document.addEventListener('turbolinks:load', initSettings);
 document.addEventListener('DOMContentLoaded', initLists);
\ No newline at end of file
diff --git a/app/javascript/retrospring/features/settings/index.ts b/app/javascript/retrospring/features/settings/index.ts
new file mode 100644
index 00000000..3aa64226
--- /dev/null
+++ b/app/javascript/retrospring/features/settings/index.ts
@@ -0,0 +1,18 @@
+import {createDeleteEvent, createSubmitEvent} from "retrospring/features/settings/mute";
+
+export default (): void => {
+  const submit: HTMLButtonElement = document.getElementById('new-rule-submit') as HTMLButtonElement;
+  if (submit.classList.contains('js-initialized')) return;
+
+  const rulesList = document.querySelector<HTMLDivElement>('.js-rules-list');
+  rulesList.querySelectorAll<HTMLDivElement>('.form-group:not(.js-initalized)').forEach(entry => {
+    const button = entry.querySelector('button')
+    button.onclick = createDeleteEvent(entry, button)
+  });
+  const textEntry: HTMLButtonElement = document.getElementById('new-rule-text') as HTMLButtonElement;
+  const template: HTMLTemplateElement = document.getElementById('rule-template') as HTMLTemplateElement;
+
+  submit.form.onsubmit = createSubmitEvent(submit, rulesList, textEntry, template)
+
+  submit.classList.add('js-initialized')
+}
\ No newline at end of file
diff --git a/app/javascript/retrospring/features/settings/mute.ts b/app/javascript/retrospring/features/settings/mute.ts
new file mode 100644
index 00000000..a402538d
--- /dev/null
+++ b/app/javascript/retrospring/features/settings/mute.ts
@@ -0,0 +1,59 @@
+import Rails from '@rails/ujs';
+
+export function createSubmitEvent(
+  submit: HTMLButtonElement,
+  rulesList: HTMLDivElement,
+  textEntry: HTMLButtonElement,
+  template: HTMLTemplateElement
+): (event: Event) => void {
+  return (event) => {
+    event.preventDefault();
+    submit.disabled = true;
+
+    Rails.ajax({
+      url: '/ajax/mute',
+      type: 'POST',
+      dataType: 'json',
+      data: new URLSearchParams({muted_phrase: textEntry.value}).toString(),
+      success: (data) => {
+        submit.disabled = false;
+        if (!data.success) return;
+
+        const newEntryFragment = template.content.cloneNode(true) as Element;
+        newEntryFragment.querySelector<HTMLInputElement>('input').value = textEntry.value;
+        const newDeleteButton = newEntryFragment.querySelector<HTMLButtonElement>('button')
+        newDeleteButton.dataset.id = String(data.id);
+        newDeleteButton.onclick = createDeleteEvent(
+          newEntryFragment.querySelector('.form-group'),
+          newDeleteButton
+        )
+
+        rulesList.appendChild(newEntryFragment)
+
+        textEntry.value = ''
+      }
+    });
+  };
+}
+
+export function createDeleteEvent(
+  entry: HTMLDivElement,
+  deleteButton: HTMLButtonElement
+): () => void {
+  return () => {
+    deleteButton.disabled = true;
+
+    Rails.ajax({
+      url: '/ajax/mute/' + deleteButton.dataset.id,
+      type: 'DELETE',
+      dataType: 'json',
+      success: (data) => {
+        if (data.success) {
+          entry.parentElement.removeChild(entry)
+        } else {
+          deleteButton.disabled = false;
+        }
+      }
+    })
+  }
+}
\ No newline at end of file
diff --git a/app/models/mute_rule.rb b/app/models/mute_rule.rb
new file mode 100644
index 00000000..b5b828b4
--- /dev/null
+++ b/app/models/mute_rule.rb
@@ -0,0 +1,7 @@
+class MuteRule < ApplicationRecord
+  belongs_to :user
+
+  def applies_to?(post)
+    !!(post.content =~ /\b#{Regexp.escape(muted_phrase)}\b/i)
+  end
+end
diff --git a/app/models/user.rb b/app/models/user.rb
index 5e86fc31..f3407967 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -41,6 +41,7 @@ class User < ApplicationRecord
   has_many :moderation_votes, dependent: :destroy
   has_many :lists, dependent: :destroy
   has_many :list_memberships, class_name: "ListMember", foreign_key: 'user_id', dependent: :destroy
+  has_many :mute_rules, dependent: :destroy
 
   has_many :subscriptions, dependent: :destroy
   has_many :totp_recovery_codes, dependent: :destroy
diff --git a/app/views/settings/_muted.haml b/app/views/settings/_muted.haml
new file mode 100644
index 00000000..2fea6e29
--- /dev/null
+++ b/app/views/settings/_muted.haml
@@ -0,0 +1,24 @@
+.card
+  .card-body
+    %h2 Muted words
+    %p Muting words (or longer phrases) will prevent questions containing those to appear in your inbox.
+    %p Note: Filtered questions are discarded completely from your inbox, and won't reappear if you remove a filter later on.
+    .js-rules-list
+      - @rules.each do |rule|
+        .form-group
+          .input-group
+            %input.form-control{ disabled: true, value: rule.muted_phrase }
+            .input-group-append
+              %button.btn.btn-danger{ type: 'button', data: { id: rule.id } } Remove
+    .form-group
+      %form
+        .input-group
+          %input.form-control#new-rule-text{ placeholder: 'Add a new muted word...' }
+          .input-group-append
+            %button.btn.btn-primary#new-rule-submit{ type: 'submit' } Add
+%template#rule-template
+  .form-group
+    .input-group
+      %input.form-control{ disabled: true }
+      .input-group-append
+        %button.btn.btn-danger{ type: 'button' } Remove
diff --git a/app/views/tabs/_settings.haml b/app/views/tabs/_settings.haml
index d6210214..9195899a 100644
--- a/app/views/tabs/_settings.haml
+++ b/app/views/tabs/_settings.haml
@@ -5,6 +5,7 @@
     = list_group_item t('views.settings.tabs.privacy'), edit_user_privacy_path
     = list_group_item t('views.settings.tabs.security'), edit_user_security_path
     = list_group_item t('views.settings.tabs.sharing'), services_path
+    = list_group_item 'Muted words', edit_user_mute_rules_path
     = list_group_item 'Theme', edit_user_theme_path
     = list_group_item 'Your Data', user_data_path
     = list_group_item 'Export', user_export_path
diff --git a/app/views/user/edit_mute.haml b/app/views/user/edit_mute.haml
new file mode 100644
index 00000000..aa4c6812
--- /dev/null
+++ b/app/views/user/edit_mute.haml
@@ -0,0 +1,4 @@
+= render 'settings/muted'
+
+- provide(:title, generate_title('Muted words'))
+- parent_layout 'user/settings'
diff --git a/app/workers/question_worker.rb b/app/workers/question_worker.rb
index b49ced7c..cd054e6b 100644
--- a/app/workers/question_worker.rb
+++ b/app/workers/question_worker.rb
@@ -9,9 +9,12 @@ class QuestionWorker
   # @param question_id [Integer] newly created question id
   def perform(user_id, question_id)
     user = User.find(user_id)
+    question = Question.find(question_id)
 
     user.followers.each do |f|
-      Inbox.create(user_id: f.id, question_id: question_id, new: true)
+      unless MuteRule.where(user: f).any? { |rule| rule.applies_to? question }
+        Inbox.create(user_id: f.id, question_id: question_id, new: true)
+      end
     end
   rescue StandardError => e
     logger.info "failed to ask question: #{e.message}"
diff --git a/config/routes.rb b/config/routes.rb
index 064e6ab0..6ff41bee 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -73,6 +73,7 @@ Rails.application.routes.draw do
   match '/settings/security/2fa', to: 'user#update_2fa', via: :patch, as: :update_user_2fa
   match '/settings/security/2fa', to: 'user#destroy_2fa', via: :delete, as: :destroy_user_2fa
   match '/settings/security/recovery', to: 'user#reset_user_recovery_codes', via: :delete, as: :reset_user_recovery_codes
+  match '/settings/muted', to: 'user#edit_mute', via: :get, as: :edit_user_mute_rules
 
   # resources :services, only: [:index, :destroy]
   match '/settings/services', to: 'services#index', via: 'get', as: :services
@@ -114,6 +115,9 @@ Rails.application.routes.draw do
     match '/list_membership', to: 'list#membership', via: :post, as: :list_membership
     match '/subscribe', to: 'subscription#subscribe', via: :post, as: :subscribe_answer
     match '/unsubscribe', to: 'subscription#unsubscribe', via: :post, as: :unsubscribe_answer
+    match '/mute', to: 'mute_rule#create', via: :post, as: :create_mute_rule
+    match '/mute/:id', to: 'mute_rule#update', via: :post, as: :update_mute_rule
+    match '/mute/:id', to: 'mute_rule#destroy', via: :delete, as: :delete_mute_rule
   end
 
   match '/discover', to: 'discover#index', via: :get, as: :discover
diff --git a/db/migrate/20211222165159_create_mute_rules.rb b/db/migrate/20211222165159_create_mute_rules.rb
new file mode 100644
index 00000000..0e548bc5
--- /dev/null
+++ b/db/migrate/20211222165159_create_mute_rules.rb
@@ -0,0 +1,12 @@
+class CreateMuteRules < ActiveRecord::Migration[5.2]
+  def change
+    create_table :mute_rules do |t|
+      t.references :user, foreign_key: true
+      t.string :muted_phrase
+
+      t.timestamps
+    end
+
+    change_column(:mute_rules, :id, :bigint, default: -> { "gen_timestamp_id('mute_rules'::text)" })
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 017794d2..a1294985 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -107,6 +107,14 @@ ActiveRecord::Schema.define(version: 2021_12_28_135426) do
     t.index ["user_id"], name: "index_moderation_votes_on_user_id"
   end
 
+  create_table "mute_rules", id: :bigint, default: -> { "gen_timestamp_id('mute_rules'::text)" }, force: :cascade do |t|
+    t.bigint "user_id"
+    t.string "muted_phrase"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["user_id"], name: "index_mute_rules_on_user_id"
+  end
+
   create_table "notifications", id: :serial, force: :cascade do |t|
     t.string "target_type"
     t.bigint "target_id"
@@ -305,5 +313,6 @@ ActiveRecord::Schema.define(version: 2021_12_28_135426) do
     t.index ["user_id"], name: "index_users_roles_on_user_id"
   end
 
+  add_foreign_key "mute_rules", "users"
   add_foreign_key "profiles", "users"
 end
diff --git a/spec/controllers/ajax/mute_rule_controller_spec.rb b/spec/controllers/ajax/mute_rule_controller_spec.rb
new file mode 100644
index 00000000..603a6f97
--- /dev/null
+++ b/spec/controllers/ajax/mute_rule_controller_spec.rb
@@ -0,0 +1,89 @@
+require 'rails_helper'
+
+describe Ajax::MuteRuleController, :ajax_controller, type: :controller do
+
+  describe "#create" do
+    subject { post(:create, params: params) }
+
+    context "when user is signed in" do
+      before(:each) { sign_in(user) }
+
+      let(:params) { { muted_phrase: 'test' } }
+      let(:expected_response) do
+        {
+          "success" => true,
+          "status" => "okay",
+          "id" => MuteRule.last.id,
+          "message" => "Rule added successfully.",
+        }
+      end
+
+      it "creates a mute rule" do
+        expect { subject }.to change { MuteRule.count }.by(1)
+        expect(response).to have_http_status(:success)
+
+        rule = MuteRule.first
+        expect(rule.user_id).to eq(user.id)
+        expect(rule.muted_phrase).to eq('test')
+      end
+
+      include_examples "returns the expected response"
+    end
+  end
+
+  describe "#update" do
+    subject { post(:update, params: params) }
+
+    context "when user is signed in" do
+      before(:each) { sign_in(user) }
+
+      let(:rule) { MuteRule.create(user: user, muted_phrase: 'test') }
+      let(:params) { { id: rule.id, muted_phrase: 'dogs' } }
+      let(:expected_response) do
+        {
+          "success" => true,
+          "status" => "okay",
+          "message" => "Rule updated successfully."
+        }
+      end
+
+      it "updates a mute rule" do
+        subject
+        expect(response).to have_http_status(:success)
+
+        expect(rule.reload.muted_phrase).to eq('dogs')
+      end
+
+      include_examples "returns the expected response"
+    end
+  end
+
+  describe "#destroy" do
+    subject { delete(:destroy, params: params) }
+
+    context "when user is signed in" do
+      before(:each) { sign_in(user) }
+
+      let(:rule) { MuteRule.create(user: user, muted_phrase: 'test') }
+      let(:params) { { id: rule.id } }
+      let(:expected_response) do
+        {
+          "success" => true,
+          "status" => "okay",
+          "message" => "Rule deleted successfully."
+        }
+      end
+
+      it "deletes a mute rule" do
+        subject
+        expect(response).to have_http_status(:success)
+
+        expect(MuteRule.exists?(rule.id)).to eq(false)
+
+      end
+
+      include_examples "returns the expected response"
+    end
+  end
+
+end
diff --git a/spec/models/mute_rule_spec.rb b/spec/models/mute_rule_spec.rb
new file mode 100644
index 00000000..5d47fac6
--- /dev/null
+++ b/spec/models/mute_rule_spec.rb
@@ -0,0 +1,13 @@
+require 'rails_helper'
+
+RSpec.describe MuteRule, type: :model do
+  describe "#applies_to?" do
+    let(:user) { FactoryBot.create(:user) }
+    let(:rule) { MuteRule.create(user: user, muted_phrase: "trial") }
+    let(:question) { Question.create(user: user, content: "Did you know that the critically acclaimed MMORPG Final Fantasy XIV has a free trial, and includes the entirety of A Realm Reborn AND the award-winning Heavensward expansion up to level 60 with no restrictions on playtime?") }
+
+    it "only returns true for questions matching a certain phrase" do
+      expect(rule.applies_to?(question)).to be(true)
+    end
+  end
+end
diff --git a/spec/workers/question_worker_spec.rb b/spec/workers/question_worker_spec.rb
index 832276ac..dc069f82 100644
--- a/spec/workers/question_worker_spec.rb
+++ b/spec/workers/question_worker_spec.rb
@@ -26,5 +26,19 @@ describe QuestionWorker do
             .to(5)
         )
     end
+
+    it "respects mute rules" do
+      question.content = 'Some spicy question text'
+      question.save
+
+      MuteRule.create(user_id: user.followers.first.id, muted_phrase: 'spicy')
+
+      expect { subject }
+        .to(
+          change { Inbox.where(user_id: user.followers.ids, question_id: question_id, new: true).count }
+            .from(0)
+            .to(4)
+        )
+    end
   end
 end