Kimoi Meaning: What キモい Means and Why It Can Hurt

Kimoi (キモい) is casual slang for gross, creepy or disgusting. It is a shortened form of kimochi warui (気持ち悪い), which can also mean I feel sick. Said about bugs it is harmless, but said about a person it is deeply hurtful.

What you need to know

Kimoi Meaning: What キモい Means and Why It Can Hurt

Kimoi is one of the first slang words learners notice, because characters in anime shout it at slimy monsters, strange creatures and embarrassing classmates. It is genuinely useful: when you see a giant centipede, kimoi! is exactly what a Japanese friend would say. But it comes with a warning label. Aimed at a person's looks, hobbies or way of talking, it is among the most wounding words a young person can hear, and it is closely tied to bullying at school. This guide shows where kimoi comes from, every real use, the big difference between kimoi and kimochi warui when you feel ill, the playful kimo-kawaii (gross but cute), safer ways to say you dislike something, how to reply, and a short dialogue at an aquarium.

Kimoi is short for kimochi warui: gross, creepy, disgusting

For feeling sick, say kimochi warui, never kimoi

Aimed at a person's looks or hobbies, kimoi is deeply hurtful

Kimo-kawaii means gross but cute, for odd characters and creatures

What kimoi means in one minute

Kimoi is an i-adjective meaning gross, creepy or disgusting. It is an instant reaction: you see something unpleasant, and kimoi! comes out, usually with a little shudder. It is casual slang, used among friends, siblings and classmates, and constantly in anime and variety shows.

It sits in a family with its full form, kimochi warui, and with the playful kimo-kawaii. The full form has a second meaning that kimoi does not share: I feel sick.

Four picture cards: a shudder of disgust, a crawling bug, a person feeling queasy, and an odd but lovable octopus character.
Kimoi for gross things, kimochi warui for feeling sick, and kimo-kawaii for creatures that are odd but cute.
JapaneseRomajiMeaning
キモい!Kimoi!Gross! / Creepy!
虫、キモい。Mushi, kimoi.Bugs are gross.
気持ち悪い…。Kimochi warui...I feel sick...
キモかわいいkimokawaiigross but cute

From kimochi warui to kimoi

Kimochi (気持ち) means feeling or mood, and warui (悪い) means bad. Together, kimochi warui describes a bad, unpleasant feeling: the physical one of nausea, and the emotional one you get from something creepy or disgusting. Young people clipped it to kimoi, much as kakkoii and other long words get shortened in slang, and the short form has been common for decades.

Kimoi is usually written in katakana, キモい, which makes it look like a sharp reaction. In speech it shrinks again to kimo, often written with a small tsu to show a clipped sound, and you will also hear kimosugiru (way too gross).

JapaneseRomajiMeaning
気持ちkimochifeeling, mood
悪いwaruibad
気持ち悪いkimochi waruiunpleasant; creepy; I feel sick
キモいkimoigross, creepy (casual slang)
キモすぎる。Kimosugiru.That's way too gross.

Every real use of kimoi, with examples

The everyday, harmless uses are reactions to things: insects, slime, strange textures, gory scenes in a horror film. People also use it about their own behaviour, to laugh at themselves. Kimochi warui covers all of these and adds two more: feeling physically sick, and a genuine sense of unease, such as when you feel someone is following you.

JapaneseRomajiMeaning
この食感、ちょっとキモい。Kono shokkan, chotto kimoi.This texture is kind of gross.
あのシーン、キモかった。Ano shīn, kimokatta.That scene was so gross.
一人でニヤニヤして、私キモいね。Hitori de niyaniya shite, watashi kimoi ne.Grinning to myself like a weirdo, huh.
バスに酔って気持ち悪い。Basu ni yotte kimochi warui.I feel carsick on the bus.
飲みすぎて気持ち悪い。Nomisugite kimochi warui.I drank too much and feel sick.
夜道で後ろに人がいて、気持ち悪かった。Yomichi de ushiro ni hito ga ite, kimochi warukatta.Someone was behind me on a dark street; it felt creepy.

Why kimoi hurts when it is aimed at a person

When kimoi is aimed at a person, it no longer describes a reaction. It becomes a label that says you are repulsive. Saying it about someone's face, body, voice, clothes or hobbies is one of the cruellest casual insults in Japanese, and it is closely tied to teasing and bullying at school. Many adults who were called kimoi as teenagers still remember it.

As a learner, keep a simple rule: kimoi is for bugs, slime and horror films. Not for people, and not for things people love, such as someone's favourite anime, idol or collection.

TargetHow it lands
Bugs, slime, a strange texture, a gory sceneA normal casual reaction
Your own silly behaviourSelf-mocking and light
A friend's goofy face, with a laughTeasing, but risky
A person's looks, body, voice or hobbyDeeply hurtful; avoid completely
Anything in a polite settingNever; it sounds childish and rude

Kimo-kawaii and other playful relatives

Kimo-kawaii (キモかわいい) is a compound of kimoi and kawaii: gross but cute, creepy-cute. It is used with affection for odd mascots, strange sea creatures, bug-eyed toys and characters that are so weird they become lovable. Its cousin busa-kawaii (ブサかわいい) means ugly-cute and is used mainly about pets, such as a squashed-face dog. Both are compliments, and both are casual.

For something unsettling rather than disgusting, bukimi (不気味) means eerie or uncanny, and it is a neutral word you can use anywhere.

JapaneseRomajiMeaning
このキャラ、キモかわいい!Kono kyara, kimokawaii!This character is creepy-cute!
ブサかわいい犬だね。Busakawaii inu da ne.What an ugly-cute dog.
ちょっと不気味ですね。Chotto bukimi desu ne.It's a little eerie, isn't it?

Safer words, replies and learner mistakes

To say you dislike something without sounding rude, use nigate (苦手), which means it is not my thing. It is soft, polite and works for food, bugs and activities. For feeling ill in a polite setting, such as at work or at a clinic, kibun ga warui desu is the standard phrase.

If a friend says kimoi to you as a joke, you can protest playfully. If it really stings, say so gently.

JapaneseRomajiMeaning
虫はちょっと苦手です。Mushi wa chotto nigate desu.I'm not great with bugs. (polite)
すみません、気分が悪いです。Sumimasen, kibun ga warui desu.Excuse me, I feel unwell. (polite)
キモいって言わないでよ!Kimoi tte iwanaide yo!Don't call me creepy! (playful)
それは傷つくなあ。Sore wa kizutsuku nā.That really hurts.
  • Mistake 1: saying kimoi when you feel sick. Use kimochi warui or kibun ga warui desu.
  • Mistake 2: calling food someone cooked kimoi. Even if the texture is strange to you, say nigate or chotto nigate kamo.
  • Mistake 3: mixing up kimochi warui and kimochi ii. Kimochi ii means it feels good, like a hot bath or a breeze.
  • Mistake 4: using kimoi about people's interests. Fans of anime, idols or trains are not kimoi; that use is mean-spirited.

Related words: gory, scary and queasy

English gross and creepy cover a lot of ground, and Japanese splits that ground into several words. Guroi (グロい), from the English grotesque, is for gore and graphic violence, such as a horror film full of blood. Kowai (怖い) is plain scary. Zotto suru is the cold shiver you feel when something is eerie, and mukamuka suru describes a churning, queasy stomach, though mukatsuku can also mean to be irritated, so listen to the context.

These words let you be more precise than kimoi, and most of them are less personal. Saying a film is guroi describes the film; nobody is insulted.

JapaneseRomajiMeaning
グロい映画は苦手。Guroi eiga wa nigate.I can't handle gory films.
怖い話はやめて。Kowai hanashi wa yamete.Stop telling scary stories.
ぞっとした。Zotto shita.It sent a chill down my spine.
なんかムカムカする。Nanka mukamuka suru.I feel kind of queasy.

Mini dialogue: deep-sea fish at the aquarium

Two friends are at an aquarium, in front of a tank of strange deep-sea creatures. Kimoi is aimed at a fish, and the conversation turns it into kimo-kawaii, which is how the word is often used in real life.

Two friends in a dim aquarium hall laughing as they point at a strange deep-sea fish glowing in a blue tank
Kimoi aimed at a strange fish, softened into kimo-kawaii: a typical friendly use.
JapaneseRomajiMeaning
見て、この深海魚。Mite, kono shinkaigyo.Aiko: Look at this deep-sea fish.
うわ、キモい!Uwa, kimoi!Sam: Whoa, that's gross!
でも、ちょっとかわいくない?Demo, chotto kawaikunai?Aiko: But isn't it kind of cute?
確かに。キモかわいいね。Tashika ni. Kimokawaii ne.Sam: True. It's creepy-cute.
ぬいぐるみ、買っちゃおうかな。Nuigurumi, kacchaō ka na.Aiko: Maybe I'll buy the plush toy.
いいね。ぼくも買う。Ii ne. Boku mo kau.Sam: Nice. I'll get one too.
Key points

A practical way to improve

Turn this word into careful speaking practice. First, react aloud to five things that are harmless to call kimoi: a centipede, a slimy texture, a deep-sea fish, a horror film scene, your own goofy grin in a photo. Second, practise the feeling-sick lines with kimochi warui and the polite kibun ga warui desu, as if you were telling a friend and then a teacher. Third, practise the polite way to say you dislike something with nigate desu. Then ask Mocchi, Unihongo's study assistant, to quiz you on when to say kimoi, kimochi warui or nigate, one question at a time, with an explanation of each mistake. You can also chat with AI Sensei about a horror film you liked.

  1. 1

    Choose one clear goal

    Focus each session on a situation or skill you can actually use.

  2. 2

    Practice actively

    Say complete answers aloud instead of only reading or recognizing Japanese.

  3. 3

    Review and repeat

    Keep useful corrections and revisit the same skill until it feels natural.

FAQ

Frequently asked questions

What does kimoi mean in Japanese?

Kimoi (キモい) means gross, creepy or disgusting. It is slang, shortened from kimochi warui (気持ち悪い), literally a bad feeling. People use it as a quick reaction to bugs, slime, strange textures and unsettling behaviour. It is casual and only suitable with friends.

Is kimoi rude?

About things, such as insects or a weird food texture, it is just a casual reaction. Aimed at a person, especially their appearance, body or hobbies, it is very rude and can be deeply hurtful. Many people associate it with being bullied at school, so avoid using it about anyone.

How do you say I feel sick in Japanese?

Say kimochi warui (気持ち悪い), or politely kibun ga warui desu (気分が悪いです). Do not shorten it to kimoi, which only means gross or creepy. If you tell someone kimoi when you are ill, it sounds as if you are calling something disgusting.

What does kimo-kawaii mean?

Kimo-kawaii (キモかわいい) means gross but cute, or creepy-cute. People use it with affection for odd-looking mascots, strange sea creatures and characters that are so weird they become lovable. It is a compliment, not an insult, though it is still casual.

Kimoi, kimochi warui or nigate? Get it right every time

Mocchi, Unihongo's study assistant, can quiz you on these three easily confused words, one situation at a time, and explain which answer would sound rude.