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



Compounds Expand your vocabulary by studying more complex words built by the 'core words'.
Etymology Explore the origin of the 'core words'.
Wordsense Learn about the wordsenses of the english term.


TOPIK 11000 KOREAN WORDS

HSK 3.0 11000 CHINESE WORDS

7 忧愁 yōuchóu to be worried

ENGLISH 6000 THEME WORDS


OXFORD 5000 CORE WORDS



TANAKA 6000 CORE WORDS











He seems to be worried about something .

Anh ấy dường như đang lo lắng về điều gì đó.