How to say "nasty" in Japanese

Choosing the right word
  • いやらしいJLPT N1approx.Common
    i-adjectiveCovers 'nasty' in the sense of distasteful or off-putting: behavior or remarks that make you feel uncomfortable or disgusted. It can also carry a lewd overtone.
    彼女かのじょの厚あつ化粧けしょうが嫌いやらしい。↗
    Her thick makeup is disgusting.
  • 意地悪いじわるJLPT N2approx.Common
    na-adjective, nounCovers 'nasty' in the sense of mean-spirited: a person, or their behavior, that is unkind, ill-tempered, or malicious — someone who enjoys teasing others or playing tricks.
    彼女かのじょの意地悪いじわるな言葉ことばは結局けっきょく自分じぶんの身みに跳ね返はねかえってきた。↗
    Her unkind words boomeranged.
  • いやJLPT N5approx.Common
    na-adjectiveCovers 'nasty' in its plain sense of unpleasant or horrible — weather, a smell, a feeling, or a situation you dislike. It expresses a personal feeling of aversion toward the thing.
    この卵たまごは嫌いやな匂においがする。↗
    This egg has a bad smell.

Use 「いや」 for the general sense of something unpleasant or horrible, 「いやらしい」 for behavior or things you find distasteful or off-putting, and 意地悪 for a person who is mean-spirited or malicious.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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