Nantoka/역효과yeokyogwa[여쿄과]Advanced역효과 (yeokyogwa) is a Korean word meaning “adverse effect”.Meanings1adverse effectPart of speechnounHanja逆效果Related words결과result사과apple효과effect효과적being effective효과적effective효율적being efficient효율적efficient과연indeed성과result역경hardship역겹다nauseating발효coming into effectStudy Korean with flashcards →