disadvantageous
情勢は我々に不利だ。
The situation is unfavorable to us.
裁判のために弁護士と相談したけど――状況は不利だわ
I consulted a lawyer about the trial, but the situation isn’t in our favor.
— ふたりのベロニカ (1991)
学校の成績が悪いと仕事を探す時に不利だ。
Poor grades at school can put you at a disadvantage when looking for a job.