disadvantageous; harmful; unprofitable
Describes a situation, action, or outcome that is unfavorable, detrimental, or not beneficial. Often used in formal or written contexts.
That contract is disadvantageous for us.
We cannot accept harmful conditions.
Compound of 不 (fu, 'not') and 為 (tame, 'benefit, purpose'). The reading ふため is a combination of the on'yomi ふ and the kun'yomi ため. The exact historical derivation is uncertain, but the word is now rare and largely replaced by synonyms like 不利.