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
☆☆☆ SUDDENLY; ALL OF A SUDDEN Adverb 突然，忽然，猛地，一下子 đột ngột, bất thình lình, bỗng nhiên
☆☆ SUDDENLY Adverb 猛然，霍地，一下子 phắt dậy, bật dậy
☆☆ SUDDENLY Adverb 顿时，忽然 bất chợt, bỗng dưng
☆ SUDDENLY; ALL OF A SUDDEN Adverb 戛然 đột ngột
☆ ABRUPTLY; SUDDENLY Adverb 突然 vọt, vụt
☆ INSTANTLY; SUDDENLY Adverb 马上，立即，突然 ngay, liền tại chỗ, đột nhiên
☆ SUDDENLY; ABRUPTLY; LIGHTLY Adverb 扑腾 vụt, vút
☆ SUDDENLY; ABRUPTLY Adverb 勃然 đùng đùng