いやらしい

i-adjective

nasty, vulgar

Conjugation

	Affirmative	Negative
Present	いやらしい	いやらしくない
Past	いやらしかった	いやらしくなかった
て form	いやらしくて	いやらしくなくて
Adverbial	いやらしく	—
Conditional ば	いやらしければ	いやらしくなければ
Conditional たら	いやらしかったら	いやらしくなかったら

1. disagreeable, unpleasant, nasty

Describes behavior or manner that is off-putting or unpleasant.

いやらしい言(い)い方(かた)をするな。

Don't say it in such a nasty way.

いやらしい笑(わら)い方(かた)が気(き)になる。

His unpleasant way of laughing bothers me.

彼(かれ)の態度(たいど)はいやらしいほど丁寧(ていねい)だった。

His manner was unpleasantly polite.

2. vulgar, indecent, lewd, dirty

Often used to describe sexually suggestive or inappropriate behavior.

いやらしい目(め)で見(み)ないで。

Don't look at me with those lewd eyes.

いやらしい冗談(じょうだん)はやめてください。

Please stop making dirty jokes.

あの映画(えいが)はいやらしいシーンが多(おお)い。

That movie has a lot of indecent scenes.

いやらしい has two main senses: generally unpleasant/nasty behavior, and sexually suggestive or vulgar behavior. The sexual connotation is very common, so use with caution.

Writing

Usually written in hiragana. Also written as 嫌(いや)らしい.

Common collocations

いやらしい目(め): lewd eyes, suggestive gaze
いやらしい言(い)い方(かた): nasty way of speaking
いやらしい笑(わら)い方(かた): unpleasant/creepy laugh
いやらしい冗談(じょうだん): dirty joke

Usage

When describing a person's gaze or behavior, the sexual connotation (sense 2) is often the default interpretation. When describing speech or manner, sense 1 (unpleasant, underhanded) may apply.

Similar words

卑猥(ひわい): obscene, indecent (more formal, stronger)
下品(げひん): vulgar, crude (focuses on lack of refinement)
嫌(いや): unpleasant (general dislike, without sexual nuance)

Related Words

Compare: 下品(げひん) (vulgar, crude)

Related: 嫌(いや) (unpleasant (general))

Compare: 卑猥(ひわい) (obscene, indecent)

Compare: スケベ (lewd)

Compare: 猥褻(わいせつ) (obscene)

Compare: エロい (erotic)

general

Added 2026.2.5 23:29 · Revised 2026.10.8 3:51

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