むかつく
むかつく
mukatsuku
= to be irritated / to be infuriated / to feel sick (from anger)
むかつく (mukatsuku) is the Japanese verb for that rising, gut-level feeling of anger or irritation — the feeling that something is making you genuinely furious. More visceral than ‘annoyed,’ less controlled than ‘angry,’ it captures a raw emotional response.
Mukatsuku is an intransitive verb meaning to feel intensely irritated, infuriated, or even nauseated with anger. The original meaning relates to nausea — the sensation of the stomach turning — and the metaphorical extension to anger captures the same physical unease of a feeling that rises and churns. In casual speech, ‘むかつく’ is used to vent frustration: something unfair happened, someone behaved badly, a situation is aggravating. It is more intense than うざい (uzai — annoying) and describes the speaker’s internal state rather than just judging the external thing.
Mukatsuku describes how the speaker feels, not what the other thing is. Compare: ‘あいつはうざい’ (that guy is annoying — judgment of him) vs ‘あいつにむかつく’ (I’m infuriated at that guy — my internal reaction). The verb takes に for what causes the feeling: 〜にむかつく (to be furious at ~). In casual speech it is often shortened to just ‘むかつく！’ as a standalone exclamation.
Everyday use
あの態度、本当にむかつく。
Ano taido, hontou ni mukatsuku.
That attitude really infuriates me.
Casual / Social Media
ゲームでまたやられた！むかつく〜！！
Geemu de mata yarareta! Mukatsuku~!!
I got beaten again in the game! Ugh, so infuriating!!
Formal / Cultural context
「むかつく」という表現は、怒りや嫌悪感を身体感覚と結びつける日本語の感情語彙の一例である。
‘Mukatsuku’ to iu hyougen wa, ikari ya ken-okan wo shintai kankaku to musubitsukeru nihongo no kanjou goi no ichi-rei de aru.
The expression ‘mukatsuku’ is an example of Japanese emotional vocabulary that links feelings of anger and aversion to physical sensation.
Japanese has a rich vocabulary for anger that distinguishes between different textures of the emotion. 怒る (okoru) is to get angry in a direct, expressed way. 腹が立つ (hara ga tatsu) — the stomach stands up — describes a more dignified, righteous indignation. むかつく sits in a rawer, more visceral register: it’s anger that feels like it’s rising from the gut, not a controlled response. This specificity reflects a cultural tendency in Japanese to describe emotions through their physical manifestation in the body.
On social media, むかつく is one of the most common words used to vent in Japanese. It appears in tweets and posts about unfair treatment, frustrating situations, rude people, and tech problems with equal frequency. Its directness and emotional authenticity make it satisfying to type — the two kana syllables む and か feel expressive when typed in succession, which has contributed to its dominance in digital emotional expression.
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