diff --git a/locales/index.d.ts b/locales/index.d.ts
index da0f7a963f..b6a80f004a 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -11988,6 +11988,10 @@ export interface Locale extends ILocale {
      * Boosts muted
      */
     "renoteMuted": string;
+    /**
+     * {name} said something in a muted thread
+     */
+    "userSaysSomethingInMutedThread": ParameterizedString<"name">;
     /**
      * Mark all media from user as NSFW
      */
diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index 20071ce00d..c8bb441359 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div
-	v-if="!hardMuted && muted === false"
+	v-if="!hardMuted && muted === false && !threadMuted"
 	v-show="!isDeleted"
 	ref="rootEl"
 	v-hotkey="keymap"
@@ -168,8 +168,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</div>
 	</article>
 </div>
-<div v-else-if="!hardMuted" :class="$style.muted" @click="muted = false">
-	<SkMutedNote :muted="muted" :note="appearNote"></SkMutedNote>
+<div v-else-if="!hardMuted" :class="$style.muted" @click.stop="muted = false">
+	<SkMutedNote :muted="muted" :threadMuted="threadMuted" :note="appearNote"></SkMutedNote>
 </div>
 <div v-else>
 	<!--
@@ -312,7 +312,7 @@ const isLong = shouldCollapsed(appearNote.value, urls.value);
 const collapsed = ref(prefer.s.expandLongNote && appearNote.value.cw == null && isLong ? false : appearNote.value.cw == null && isLong);
 const isDeleted = ref(false);
 const renoted = ref(false);
-const { muted, hardMuted } = checkMutes(appearNote.value, props.withHardMute);
+const { muted, hardMuted, threadMuted } = checkMutes(appearNote, computed(() => props.withHardMute));
 const translation = ref<Misskey.entities.NotesTranslateResponse | false | null>(null);
 const translating = ref(false);
 const showTicker = (prefer.s.instanceTicker === 'always') || (prefer.s.instanceTicker === 'remote' && appearNote.value.user.instance);
diff --git a/packages/frontend/src/components/MkNoteDetailed.vue b/packages/frontend/src/components/MkNoteDetailed.vue
index 9f907d77fc..12e7b1b0cc 100644
--- a/packages/frontend/src/components/MkNoteDetailed.vue
+++ b/packages/frontend/src/components/MkNoteDetailed.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div
-	v-if="!muted"
+	v-if="!muted && !threadMuted"
 	v-show="!isDeleted"
 	ref="rootEl"
 	v-hotkey="keymap"
@@ -226,8 +226,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</div>
 	</div>
 </div>
-<div v-else class="_panel" :class="$style.muted" @click="muted = false">
-	<SkMutedNote :muted="muted" :note="appearNote"></SkMutedNote>
+<div v-else class="_panel" :class="$style.muted" @click.stop="muted = false">
+	<SkMutedNote :muted="muted" :threadMuted="threadMuted" :note="appearNote"></SkMutedNote>
 </div>
 </template>
 
@@ -354,7 +354,7 @@ const mergedCW = computed(() => computeMergedCw(appearNote.value));
 
 const renoteTooltip = computeRenoteTooltip(renoted);
 
-const { muted } = checkMutes(appearNote.value);
+const { muted, threadMuted } = checkMutes(appearNote);
 
 watch(() => props.expandAllCws, (expandAllCws) => {
 	if (expandAllCws !== showContent.value) showContent.value = expandAllCws;
diff --git a/packages/frontend/src/components/MkNoteSub.vue b/packages/frontend/src/components/MkNoteSub.vue
index 58de5bd5a7..5eebf9ee31 100644
--- a/packages/frontend/src/components/MkNoteSub.vue
+++ b/packages/frontend/src/components/MkNoteSub.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<div v-show="!isDeleted" v-if="!muted" ref="el" :class="[$style.root, { [$style.children]: depth > 1 }]">
+<div v-show="!isDeleted" v-if="!muted && !threadMuted" ref="el" :class="[$style.root, { [$style.children]: depth > 1 }]">
 	<div :class="$style.main">
 		<div v-if="note.channel" :class="$style.colorBar" :style="{ background: note.channel.color }"></div>
 		<MkAvatar :class="$style.avatar" :user="note.user" link preview/>
@@ -78,8 +78,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<MkA class="_link" :to="notePage(note)">{{ i18n.ts.continueThread }} <i class="ti ti-chevron-double-right"></i></MkA>
 	</div>
 </div>
-<div v-else :class="$style.muted" @click="muted = false">
-	<SkMutedNote :muted="muted" :note="appearNote"></SkMutedNote>
+<div v-else :class="$style.muted" @click.stop="muted = false">
+	<SkMutedNote :muted="muted" :threadMuted="threadMuted" :note="appearNote"></SkMutedNote>
 </div>
 </template>
 
@@ -172,7 +172,7 @@ async function removeReply(id: Misskey.entities.Note['id']) {
 	}
 }
 
-const { muted } = checkMutes(appearNote.value);
+const { muted, threadMuted } = checkMutes(appearNote);
 
 useNoteCapture({
 	rootEl: el,
diff --git a/packages/frontend/src/components/SkFollowingFeedEntry.vue b/packages/frontend/src/components/SkFollowingFeedEntry.vue
index b71777e032..01e3d18e9f 100644
--- a/packages/frontend/src/components/SkFollowingFeedEntry.vue
+++ b/packages/frontend/src/components/SkFollowingFeedEntry.vue
@@ -18,8 +18,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkA>
 		</header>
 		<div>
-			<div v-if="muted" :class="[$style.text, $style.muted]">
-				<SkMutedNote :muted="muted" :note="note"></SkMutedNote>
+			<div v-if="muted || threadMuted" :class="[$style.text, $style.muted]">
+				<SkMutedNote :muted="muted" :threadMuted="threadMuted" :note="note"></SkMutedNote>
 			</div>
 			<Mfm v-else :class="$style.text" :text="getNoteSummary(note)" :isBlock="true" :plain="true" :nowrap="false" :isNote="true" nyaize="respect" :author="note.user"/>
 		</div>
@@ -35,6 +35,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import * as Misskey from 'misskey-js';
+import { computed } from 'vue';
 import { getNoteSummary } from '@/utility/get-note-summary.js';
 import { userPage } from '@/filters/user.js';
 import { notePage } from '@/filters/note.js';
@@ -49,8 +50,7 @@ defineEmits<{
 	(event: 'select', user: Misskey.entities.UserLite): void
 }>();
 
-// eslint-disable-next-line vue/no-setup-props-reactivity-loss
-const { muted, hardMuted } = checkMutes(props.note);
+const { muted, hardMuted, threadMuted } = checkMutes(computed(() => props.note));
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/SkMutedNote.vue b/packages/frontend/src/components/SkMutedNote.vue
index c9b3d768de..28933614ce 100644
--- a/packages/frontend/src/components/SkMutedNote.vue
+++ b/packages/frontend/src/components/SkMutedNote.vue
@@ -4,24 +4,34 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<I18n v-if="muted === 'sensitiveMute'" :src="i18n.ts.userSaysSomethingSensitive" tag="small">
+<I18n v-if="threadMuted" :src="i18n.ts.userSaysSomethingInMutedThread" tag="small">
 	<template #name>
 		<MkUserName :user="note.user"/>
 	</template>
 </I18n>
-<I18n v-else-if="!prefer.s.showSoftWordMutedWord" :src="i18n.ts.userSaysSomething" tag="small">
-	<template #name>
-		<MkUserName :user="note.user"/>
-	</template>
-</I18n>
-<I18n v-else :src="i18n.ts.userSaysSomethingAbout" tag="small">
-	<template #name>
-		<MkUserName :user="note.user"/>
-	</template>
-	<template #word>
-		{{ mutedWords }}
-	</template>
-</I18n>
+
+<br v-if="threadMuted && muted">
+
+<template v-if="muted">
+	<I18n v-if="muted === 'sensitiveMute'" :src="i18n.ts.userSaysSomethingSensitive" tag="small">
+		<template #name>
+			<MkUserName :user="note.user"/>
+		</template>
+	</I18n>
+	<I18n v-else-if="!prefer.s.showSoftWordMutedWord" :src="i18n.ts.userSaysSomething" tag="small">
+		<template #name>
+			<MkUserName :user="note.user"/>
+		</template>
+	</I18n>
+	<I18n v-else :src="i18n.ts.userSaysSomethingAbout" tag="small">
+		<template #name>
+			<MkUserName :user="note.user"/>
+		</template>
+		<template #word>
+			{{ mutedWords }}
+		</template>
+	</I18n>
+</template>
 </template>
 
 <script setup lang="ts">
@@ -32,6 +42,7 @@ import { prefer } from '@/preferences.js';
 
 const props = defineProps<{
 	muted: false | 'sensitiveMute' | string[];
+	threadMuted: boolean;
 	note: Misskey.entities.Note;
 }>();
 
diff --git a/packages/frontend/src/components/SkNote.vue b/packages/frontend/src/components/SkNote.vue
index 2c8a553052..cca1573cbc 100644
--- a/packages/frontend/src/components/SkNote.vue
+++ b/packages/frontend/src/components/SkNote.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div
-	v-if="!hardMuted && muted === false"
+	v-if="!hardMuted && muted === false && !threadMuted"
 	v-show="!isDeleted"
 	ref="rootEl"
 	v-hotkey="keymap"
@@ -168,8 +168,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</div>
 	</article>
 </div>
-<div v-else-if="!hardMuted" :class="$style.muted" @click="muted = false">
-	<SkMutedNote :muted="muted" :note="appearNote"></SkMutedNote>
+<div v-else-if="!hardMuted" :class="$style.muted" @click.stop="muted = false">
+	<SkMutedNote :muted="muted" :threadMuted="threadMuted" :note="appearNote"></SkMutedNote>
 </div>
 <div v-else>
 	<!--
@@ -311,7 +311,7 @@ const isLong = shouldCollapsed(appearNote.value, urls.value);
 const collapsed = ref(prefer.s.expandLongNote && appearNote.value.cw == null && isLong ? false : appearNote.value.cw == null && isLong);
 const isDeleted = ref(false);
 const renoted = ref(false);
-const { muted, hardMuted } = checkMutes(appearNote.value, props.withHardMute);
+const { muted, hardMuted, threadMuted } = checkMutes(appearNote, computed(() => props.withHardMute));
 const translation = ref<Misskey.entities.NotesTranslateResponse | false | null>(null);
 const translating = ref(false);
 const showTicker = (prefer.s.instanceTicker === 'always') || (prefer.s.instanceTicker === 'remote' && appearNote.value.user.instance);
diff --git a/packages/frontend/src/components/SkNoteDetailed.vue b/packages/frontend/src/components/SkNoteDetailed.vue
index 4b386e9ee7..c9fd774af7 100644
--- a/packages/frontend/src/components/SkNoteDetailed.vue
+++ b/packages/frontend/src/components/SkNoteDetailed.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div
-	v-if="!muted"
+	v-if="!muted && !threadMuted"
 	v-show="!isDeleted"
 	ref="rootEl"
 	v-hotkey="keymap"
@@ -230,8 +230,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</div>
 	</div>
 </div>
-<div v-else class="_panel" :class="$style.muted" @click="muted = false">
-	<SkMutedNote :muted="muted" :note="appearNote"></SkMutedNote>
+<div v-else class="_panel" :class="$style.muted" @click.stop="muted = false">
+	<SkMutedNote :muted="muted" :threadMuted="threadMuted" :note="appearNote"></SkMutedNote>
 </div>
 </template>
 
@@ -359,7 +359,7 @@ const mergedCW = computed(() => computeMergedCw(appearNote.value));
 
 const renoteTooltip = computeRenoteTooltip(renoted);
 
-const { muted } = checkMutes(appearNote.value);
+const { muted, threadMuted } = checkMutes(appearNote);
 
 watch(() => props.expandAllCws, (expandAllCws) => {
 	if (expandAllCws !== showContent.value) showContent.value = expandAllCws;
diff --git a/packages/frontend/src/components/SkNoteSub.vue b/packages/frontend/src/components/SkNoteSub.vue
index 4e8a3147ad..728a4c905e 100644
--- a/packages/frontend/src/components/SkNoteSub.vue
+++ b/packages/frontend/src/components/SkNoteSub.vue
@@ -86,8 +86,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<MkA class="_link" :to="notePage(note)">{{ i18n.ts.continueThread }} <i class="ti ti-chevron-double-right"></i></MkA>
 	</div>
 </div>
-<div v-else :class="$style.muted" @click="muted = false">
-	<SkMutedNote :muted="muted" :note="appearNote"></SkMutedNote>
+<div v-else :class="$style.muted" @click.stop="muted = false">
+	<SkMutedNote :muted="muted" :threadMuted="false" :note="appearNote"></SkMutedNote>
 </div>
 </template>
 
@@ -186,7 +186,7 @@ async function removeReply(id: Misskey.entities.Note['id']) {
 	}
 }
 
-const { muted } = checkMutes(appearNote.value);
+const { muted } = checkMutes(appearNote);
 
 useNoteCapture({
 	rootEl: el,
diff --git a/packages/frontend/src/utility/check-word-mute.ts b/packages/frontend/src/utility/check-word-mute.ts
index 03fe95ae3a..c6be565541 100644
--- a/packages/frontend/src/utility/check-word-mute.ts
+++ b/packages/frontend/src/utility/check-word-mute.ts
@@ -3,14 +3,34 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 import * as Misskey from 'misskey-js';
-import { inject, ref } from 'vue';
-import type { Ref } from 'vue';
+import { computed, inject, ref } from 'vue';
+import type { Ref, ComputedRef } from 'vue';
 import { $i } from '@/i';
 
-export function checkMutes(noteToCheck: Misskey.entities.Note, withHardMute = false) {
-	const muted = ref(checkMute(noteToCheck, $i?.mutedWords));
-	const hardMuted = ref(withHardMute && checkMute(noteToCheck, $i?.hardMutedWords, true));
-	return { muted, hardMuted };
+export function checkMutes(noteToCheck: ComputedRef<Misskey.entities.Note>, withHardMute?: ComputedRef<boolean>) {
+	const muteEnable = ref(true);
+
+	const muted = computed<false | string[], boolean>({
+		get() {
+			if (!muteEnable.value) return false;
+			return checkMute(noteToCheck.value, $i?.mutedWords);
+		},
+		set(value: boolean) {
+			muteEnable.value = value;
+		},
+	});
+
+	const threadMuted = computed(() => {
+		if (!muteEnable.value) return false;
+		return noteToCheck.value.isMuting;
+	});
+
+	const hardMuted = computed(() => {
+		if (!withHardMute?.value) return false;
+		return checkMute(noteToCheck.value, $i?.hardMutedWords, true);
+	});
+
+	return { muted, hardMuted, threadMuted };
 }
 
 export function checkMute(note: Misskey.entities.Note, mutes: undefined | null): false;
diff --git a/sharkey-locales/en-US.yml b/sharkey-locales/en-US.yml
index c79302ff7a..79216b9243 100644
--- a/sharkey-locales/en-US.yml
+++ b/sharkey-locales/en-US.yml
@@ -29,6 +29,7 @@ muted: "Muted"
 renoteMute: "Mute Boosts"
 renoteMuted: "Boosts muted"
 renoteUnmute: "Unmute Boosts"
+userSaysSomethingInMutedThread: "{name} said something in a muted thread"
 markAsNSFW: "Mark all media from user as NSFW"
 markInstanceAsNSFW: "Mark as NSFW"
 nsfwConfirm: "Are you sure that you want to mark all media from this account as NSFW?"