unbecoming; unsuitable; ill-matched
Describes something that does not suit a person, situation, or thing; often used for clothes, behavior, or pairings that feel mismatched or inappropriate.
Flashy clothes are unbecoming on her.
That joke was inappropriate for this occasion.
Standard kanji spelling; the い is part of the adjective stem.
Less common variant without the final い; may appear in older or more compact writing.
Formed from the negative prefix 不 (ふ) and 似合い (にあい), the noun form of 似合う (にあう, 'to suit'). The combination literally means 'not suiting'.