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
☆ ILL-TEMPERED; CROSS-TEMPERED; EVIL-MINDED Adjective 心术 궂다 心术不正，耍坏心眼儿 ghen tị, ghen ghét