いやらしい・嫌らしい・厭らしいiyarashii

1. i-adjectiveunpleasant; disagreeable; nasty
   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.
2. i-adjectivelewd; lascivious; obscene; filthy; dirty

• Synonym不愉快ふゆかいNeutralA noun for feeling displeased or unhappy; broad in range, with no lewd sense.
• Synonym忌まわしいいまわしいWrittenA written word for the abhorrent or ominous, as in 「忌まわしい事件」; carries a dark, sinister shade.
• SynonymエロCasualA loanword for the erotic or horny; common in casual speech.
• Synonym厭わしいいとわしいWrittenA written word for something so detestable you want to keep your distance; carries no lewd nuance.
• Related下品げひんNeutralAn everyday noun for vulgar, tasteless speech and behaviour.
• Related低俗ていぞくWrittenA written noun for lowbrow, trashy content, as in 「低俗な番組」.
• RelatedはしたないNeutralFor improper, immodest conduct, said mostly of women.
• Related忌々しいいまいましいNeutralFor things that infuriate or vex you, as in 「忌々しい雨」; centres on irritation, whereas 「嫌らしい」 leans toward lewdness or plain unpleasantness.
• Related卑猥ひわいWrittenA noun for lewd, indecent speech and behaviour; written in flavour and strong in tone.
• Related淫らみだらWrittenA written word for licentious, wanton conduct; stresses uncontrolled, immodest behaviour.
• RelatedいかがわしいNeutralCovers anything suspicious or lewdly improper, with a moral taint, as in 「いかがわしい店」.
• RelatedわいせつWrittenA noun for obscenity, often in legal usage, as in 「猥褻物」.
• RelatedえげつないCasualColloquial, with a Kansai flavour, for mean, blatant tactics that put people off.
• Related野卑やひWrittenA written noun for coarse vulgarity; stresses lack of breeding.
• Related淫猥いんわいWrittenA written noun for obscenity; rarely used and close in sense to 「猥褻」.
• Related汚らわしいけがらわしいWrittenA written word for something filthy and repugnant, charged with strong moral disgust.
• Related憎々しいにくにくしいNeutralFor hateful, detestable things, as in 「憎々しい態度」; centres on inviting hatred.
• Antonym清らかきよらかNeutralAntonym: pure and unsullied, the opposite of the lewd 「嫌らしい」.

Use 「嫌らしい」 for something lewd or simply unpleasant, as in 「嫌らしい目つき」. For sheer irritation pick 「忌々しい」, for vulgar tastelessness 「下品」, for the erotic 「エロ」, for obscenity 「猥褻」, and for blatant, off-putting tactics 「えげつない」; 「清らか」 is the pure opposite.

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

1. 態度たいど・様子ようすが不愉快ふゆかいに感かんじられるさま。
2. 性的せいてきに露骨ろこつなさま。