1 (wiktionary) 2 (vi.wikipedia) 3 (en.wikipedia) 4 (glosbe)

Core Words Familarize yourself with the 'core words'.
Compounds Expand your vocabulary by studying more complex words built by the 'core words'.
Wordsense Learn about the wordsenses of the english term.

ETYMOLOGY

KOREAN 3.0 Eng Wordtype Etym. Gb Vie
☆☆ IRRITATED; ANNOYED Adjective 烦人 nổi khùng, nổi giận
☆ PROVOKING; PERVERSE; NASTY Adjective 烦人 tinh quái, tinh nghịch