改悪 かいあく changing (something) for the worse N1 #14,927 Meanings noun, takes する, transitive changing (something) for the worse; disimprovement; deterioration Its kanji 改 カイ · あらた.める、あらた.まる reformation, change, modify, mend, renew, examine, inspect, search 悪 アク、オ · わる.い、わる-、あ.し、にく.い、-にく.い、ああ、いずくに、いずくんぞ、にく.む bad, vice, rascal, false, evil, wrong