i-adjective
reproachful; resentful; spiteful
Describes a tone, look, or attitude that implies holding a grudge or blaming someone in a bitter, indirect way. Often used for speech or facial expressions.
彼は恨みがましい口調で文句を言った。
He complained in a reproachful tone.
そんな恨みがましい
Please don't look at me with such resentful eyes.