개선improvement 개혁reform; reformation 회개repentance; penitence 개가woman's remarriage 개각cabinet reshuffle; cabinet shake-up 개과천선reforming one’s character; mending one´s ways 개량improvement 개량종improved breed 개량형improved model 개량화improvement

악담curse; malediction; criticism 악몽nightmare; bad dream 악취odor; stink 악화aggravation; worsening 최악the worst 추악being dirty; being evil 패악wickedness; viciousness 포악cruelty; viciousness 필요악necessary evil 해악evils; ills; mischief; harm