油ゆ断だんならない

expression, i-adjective

treacherous; dangerous; untrustworthy; sneaky; cunning

Describes a person or situation that cannot be taken lightly; someone who is sly, unpredictable, or likely to cause trouble if you let your guard down. Often used in the phrase 油断ならない相手 (a person you can't afford to be careless with).

• 彼かれは油ゆ断だんならない相あい手てだ。

  He is a dangerous opponent you can't let your guard down around.

• この道みちは夜よるになると油ゆ断だんならない。

  This road is treacherous at night.