diff --git a/packages/frontend/src/boot/main-boot.ts b/packages/frontend/src/boot/main-boot.ts
index 874e97f3a4..1eac2cddbc 100644
--- a/packages/frontend/src/boot/main-boot.ts
+++ b/packages/frontend/src/boot/main-boot.ts
@@ -24,6 +24,7 @@ import { emojiPicker } from '@/scripts/emoji-picker.js';
 import { mainRouter } from '@/router/main.js';
 import { type Keymap, makeHotkey } from '@/scripts/hotkey.js';
 import { addCustomEmoji, removeCustomEmojis, updateCustomEmojis } from '@/custom-emojis.js';
+import { initMuteInfo } from '@/scripts/check-word-mute.js';
 
 export async function mainBoot() {
 	const { isClientUpdated } = await common(() => {
@@ -343,11 +344,14 @@ export async function mainBoot() {
 			}
 		}
 
+		initMuteInfo();
+
 		const main = markRaw(stream.useChannel('main', null, 'System'));
 
 		// 自分の情報が更新されたとき
 		main.on('meUpdated', i => {
 			updateAccountPartial(i);
+			initMuteInfo();
 		});
 
 		main.on('readAllNotifications', () => {
diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index a23ff9b48e..c77c83b044 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -280,8 +280,8 @@ const urls = computed(() => parsed.value ? extractUrlFromMfm(parsed.value).filte
 const isLong = shouldCollapsed(appearNote.value, urls.value ?? []);
 const collapsed = ref(appearNote.value.cw == null && isLong);
 const isDeleted = ref(false);
-const muted = ref(checkMute(appearNote.value, $i?.mutedWords));
-const hardMuted = ref(props.withHardMute && checkMute(appearNote.value, $i?.hardMutedWords, true));
+const muted = ref(checkMute(appearNote.value, 'soft'));
+const hardMuted = ref(props.withHardMute && checkMute(appearNote.value, 'hard', true));
 const showSoftWordMutedWord = computed(() => defaultStore.state.showSoftWordMutedWord);
 const translation = ref<Misskey.entities.NotesTranslateResponse | null>(null);
 const translating = ref(false);
@@ -300,20 +300,18 @@ const pleaseLoginContext = computed<OpenOnRemoteOptions>(() => ({
 }));
 
 /* Overload FunctionにLintが対応していないのでコメントアウト
-function checkMute(noteToCheck: Misskey.entities.Note, mutedWords: Array<string | string[]> | undefined | null, checkOnly: true): boolean;
-function checkMute(noteToCheck: Misskey.entities.Note, mutedWords: Array<string | string[]> | undefined | null, checkOnly: false): Array<string | string[]> | false | 'sensitiveMute';
+function checkMute(noteToCheck: Misskey.entities.Note, type: 'soft' | 'hard', checkOnly: true): boolean;
+function checkMute(noteToCheck: Misskey.entities.Note, type: 'soft' | 'hard', checkOnly: false): Array<string | string[]> | false | 'sensitiveMute';
 */
-function checkMute(noteToCheck: Misskey.entities.Note, mutedWords: Array<string | string[]> | undefined | null, checkOnly = false): Array<string | string[]> | false | 'sensitiveMute' {
-	if (mutedWords != null) {
-		const result = checkWordMute(noteToCheck, $i, mutedWords);
-		if (Array.isArray(result)) return result;
+function checkMute(noteToCheck: Misskey.entities.Note, type: 'soft' | 'hard', checkOnly = false): Array<string | string[]> | false | 'sensitiveMute' {
+	const result = checkWordMute(noteToCheck, $i, type);
+	if (Array.isArray(result)) return result;
 
-		const replyResult = noteToCheck.reply && checkWordMute(noteToCheck.reply, $i, mutedWords);
-		if (Array.isArray(replyResult)) return replyResult;
+	const replyResult = noteToCheck.reply && checkWordMute(noteToCheck.reply, $i, type);
+	if (Array.isArray(replyResult)) return replyResult;
 
-		const renoteResult = noteToCheck.renote && checkWordMute(noteToCheck.renote, $i, mutedWords);
-		if (Array.isArray(renoteResult)) return renoteResult;
-	}
+	const renoteResult = noteToCheck.renote && checkWordMute(noteToCheck.renote, $i, type);
+	if (Array.isArray(renoteResult)) return renoteResult;
 
 	if (checkOnly) return false;
 
diff --git a/packages/frontend/src/components/MkNoteDetailed.vue b/packages/frontend/src/components/MkNoteDetailed.vue
index 9d3374d433..d1de6a8850 100644
--- a/packages/frontend/src/components/MkNoteDetailed.vue
+++ b/packages/frontend/src/components/MkNoteDetailed.vue
@@ -296,7 +296,7 @@ const galleryEl = shallowRef<InstanceType<typeof MkMediaList>>();
 const isMyRenote = $i && ($i.id === note.value.userId);
 const showContent = ref(false);
 const isDeleted = ref(false);
-const muted = ref($i ? checkWordMute(appearNote.value, $i, $i.mutedWords) : false);
+const muted = ref($i ? checkWordMute(appearNote.value, $i, 'soft') : false);
 const translation = ref<Misskey.entities.NotesTranslateResponse | null>(null);
 const translating = ref(false);
 const parsed = appearNote.value.text ? mfm.parse(appearNote.value.text) : null;
diff --git a/packages/frontend/src/components/MkNoteSub.vue b/packages/frontend/src/components/MkNoteSub.vue
index e4bade309b..2070a44e5a 100644
--- a/packages/frontend/src/components/MkNoteSub.vue
+++ b/packages/frontend/src/components/MkNoteSub.vue
@@ -62,7 +62,7 @@ const props = withDefaults(defineProps<{
 	depth: 1,
 });
 
-const muted = ref($i ? checkWordMute(props.note, $i, $i.mutedWords) : false);
+const muted = ref($i ? checkWordMute(props.note, $i, 'soft') : false);
 
 const showContent = ref(false);
 const replies = ref<Misskey.entities.Note[]>([]);
diff --git a/packages/frontend/src/scripts/check-word-mute.ts b/packages/frontend/src/scripts/check-word-mute.ts
index b54a0ef860..9f5765cda1 100644
--- a/packages/frontend/src/scripts/check-word-mute.ts
+++ b/packages/frontend/src/scripts/check-word-mute.ts
@@ -3,22 +3,27 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 import * as AhoCorasick from 'modern-ahocorasick';
+import { c } from 'node_modules/vite/dist/node/types.d-aGj9QkWt';
 import type * as Misskey from 'misskey-js';
-export function checkWordMute(
-	note: Misskey.entities.Note,
-	me: Misskey.entities.UserLite | null | undefined,
-	mutedWords: Array<string | string[]>,
-): Array<string | string[]> | false {
-	// 自分自身の投稿は対象外
-	if (me && (note.userId === me.id)) return false;
+import { $i } from '@/account.js';
+
+type WordMuteInfo = false | {
+	normals: string[];
+	and: string[][];
+	regex: Array<{ original: string; regex: RegExp }>;
+	ahoCorasick: AhoCorasick.default;
+}
+
+type GlobalMisskeyWordMute = {
+	soft: WordMuteInfo;
+	hard: WordMuteInfo;
+};
+
+function createWordMuteInfo(mutedWords: Array<string | string[]>) : WordMuteInfo {
 	if (mutedWords.length <= 0) return false;
-
-	const text = ((note.cw ?? '') + '\n' + (note.text ?? '')).trim();
-	if (text === '') return false;
-
 	const normalTexts: string[] = [];
 	const andTexts: string[][] = [];
-	const regexTexts: Array<{ originaL: string; regex: RegExp }> = [];
+	const regexTexts: Array<{ original: string; regex: RegExp }> = [];
 
 	for (const filter of mutedWords) {
 		if (Array.isArray(filter)) {
@@ -31,7 +36,7 @@ export function checkWordMute(
 			const regExp = filter.match(/^\/(.+)\/(.*)$/);
 			if (!regExp) continue;
 			try {
-				regexTexts.push({ originaL: filter, regex: new RegExp(filter.slice(1, -1)) });
+				regexTexts.push({ original: filter, regex: new RegExp(filter.slice(1, -1)) });
 			} catch {
 				// 無効な正規表現はスキップ
 			}
@@ -39,17 +44,60 @@ export function checkWordMute(
 			normalTexts.push(filter);
 		}
 	}
-	// normal wordmute with AhoCorasick
+
 	const ac = new AhoCorasick.default(normalTexts);
-	const normalMatches = ac.search(text);
+
+	return {
+		normals: normalTexts,
+		and: andTexts,
+		regex: regexTexts,
+		ahoCorasick: ac,
+	};
+}
+
+function setWordMuteInfo(mutedWords: Array<string | string[]>, hardMutedWords: Array<string | string[]>): void {
+	const soft = createWordMuteInfo(mutedWords);
+	const hard = createWordMuteInfo(hardMutedWords);
+
+	globalThis._misskeyWordMute = { soft, hard };
+}
+
+function getWordMuteInfo(): GlobalMisskeyWordMute | undefined {
+	if (!globalThis._misskeyWordMute) return undefined;
+	return globalThis._misskeyWordMute as unknown as GlobalMisskeyWordMute;
+}
+
+export function initMuteInfo(): void {
+	const mutedWords = $i?.mutedWords ?? [];
+	const hardMutedWords = $i?.hardMutedWords ?? [];
+
+	setWordMuteInfo(mutedWords, hardMutedWords);
+}
+
+export function checkWordMute(
+	note: Misskey.entities.Note,
+	me: Misskey.entities.UserLite | null | undefined,
+	type: 'soft' | 'hard',
+): Array<string | string[]> | false {
+	// 自分自身の投稿は対象外
+	if (me && (note.userId === me.id)) return false;
+
+	const wordMuteInfo = getWordMuteInfo()?.[type];
+
+	if (wordMuteInfo == null || wordMuteInfo === false) return false;
+
+	const text = ((note.cw ?? '') + '\n' + (note.text ?? '')).trim();
+	if (text === '') return false;
+
+	const normalMatches = wordMuteInfo.ahoCorasick.search(text);
 
 	// andTexts
-	const andMatches = andTexts.filter(texts => texts.filter(keyword => keyword !== '').every(keyword => text.includes(keyword)));
+	const andMatches = wordMuteInfo.and.filter(texts => texts.filter(keyword => keyword !== '').every(keyword => text.includes(keyword)));
 
 	// RegExp
-	const regexMatches = regexTexts.filter(({ regex }) => regex.test(text));
+	const regexMatches = wordMuteInfo.regex.filter(({ regex }) => regex.test(text));
 
-	const matched: Array<string | string[]> = normalMatches.map(match	=> match[1]).concat(andMatches, regexMatches.map(({ originaL }) => originaL));
+	const matched: Array<string | string[]> = normalMatches.map(match	=> match[1]).concat(andMatches, regexMatches.map(({ original }) => original));
 
 	return matched.length > 0 ? matched : false;
 }