こすい

こすい
i-adjective
sly
informalcolloquialpersonalityevaluation
Conjugation
AffirmativeNegative
Presentこすいこすくない
Pastこすかったこすくなかった
て formこすくてこすくなくて
Adverbialこすく
Conditional ばこすければこすくなければ
Conditional たらこすかったらこすくなかったら
1. sly
cunning; crafty; sneaky; stingy in a calculating way
こすい()使(つか)な。
Don't use sneaky tricks.
He has a sly side to him.
It wouldn't be satisfying to win using such underhanded methods.

こすい is an informal i-adjective describing someone or something that is cunning or sneakily stingy.

Usage

  • Implies cleverness used for selfish gain
  • Can include being stingy or penny-pinching in a calculating way
  • Has a negative, critical connotation

Common collocations

Regional notes

  • More commonly used in western Japan, particularly Kansai region
  • Standard Japanese equivalent: ずるい (sly, unfair)

Similar words

  • ずるい: Sly, unfair (standard Japanese, more common)
  • 狡猾(こうかつ): Cunning, crafty (more formal/literary)
  • せこい: Petty, small-minded (similar colloquial feel)
  • こすい: Sly in a calculating, stingy way (regional/colloquial)

Register: Informal. Colloquial and critical.