ムカつく
Meaning: To be irritated, annoyed, or pissed off — expresses a simmering frustration or anger toward someone or something.
ムカつく originally described physical nausea (the stomach churning sensation) and evolved to mean emotional irritation — the feeling of something making your blood boil. Unlike キレる (sudden snap), ムカつく describes an ongoing state of being annoyed. It is very commonly used among all age groups in casual settings and is one of the most standard ways to express irritation.
Examples
- あいつの態度マジでムカつく。 那家伙的态度真让人火大。La actitud de ese tío me cabrea de verdad.그 녀석 태도 진짜 짜증나.
- 朝からムカつくことばっかりで最悪。 从早上开始就净碰到烦心事,太倒霉了。Desde por la mañana todo han sido cosas que me irritan, un desastre.아침부터 짜증나는 일만 있어서 최악이야.
- 約束すっぽかされてめっちゃムカついてる。 被放了鸽子,气得不行。Me dejó plantado y estoy superenfadado.약속을 바람맞아서 엄청 열받고 있어.
Pronunciation
/mɯ.ka.tsɯ.kɯ/
Usage Guide
Context: friends, venting, casual conversation
Tone: irritated, annoyed, frustrated
✓ Do Say
- あの言い方ムカつくんだけど。 (The way they said that really pisses me off.)あの言い方ムカつくんだけど。(他那种说话方式真让人来气。)La forma en que lo dijo me cabrea bastante.あの言い方ムカつくんだけど。 (그 말투 진짜 짜증나는데.)
- ムカつくけど我慢するしかない。 (It's annoying but I just have to put up with it.)ムカつくけど我慢するしかない。(虽然很恼火但只能忍着。)Me fastidia, pero no me queda otra que aguantarme.ムカつくけど我慢するしかない。 (짜증나지만 참을 수밖에 없어.)
✗ Don't Say
- 面接官に「ムカつきました」と正直に言わない (Don't honestly say 'mukatsukimashita' to an interviewer — use 不快に感じました for formal contexts)面试时不要直说「ムカつきました」——正式场合应使用「不快に感じました」No digas honestamente 'mukatsukimashita' en una entrevista de trabajo — usa 不快に感じました en contextos formales面接官に「ムカつきました」と正直に言わない (면접관에게 'ムカつきました'라고 솔직히 말하지 말 것 — 격식 있는 상황에서는 不快に感じました를 사용할 것)
Common Mistakes
- Confusing ムカつく (sustained irritation) with キレる (sudden explosive anger) — they describe different anger states
- Using ムカつく in formal complaints — too casual for written or business contexts
Origin & History
From むかむか, an onomatopoeia for nausea or stomach churning. The physical sensation of queasiness became a metaphor for emotional irritation, entering common slang usage from the 1980s onward.
Cultural Context
Era: 1980s onward as emotional slang, older origins as physical nausea
Generation: All ages in casual speech
Social background: Universal informal
Regional notes: Used across Japan. One of the most standard casual ways to express annoyance in everyday conversation.
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