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

☆☆ DESIRABLE lí tưởng, đúng đắn ☆ VALIDITY; FEASIBILITY tính thích đáng, tính thích hợp, tính khả thi ☆ VALID; FEASIBLE thích đáng, thích hợp, khả thi ☆ REASONABLE; SUITABLE; APPROPRIATE thích đáng, tương xứng, thích hợp
HSK 3.0 11000 CHINESE WORDS
7 妥当  tuǒdang appropriate, proper, ready

ENGLISH 6000 THEME WORDS

OXFORD 5000 CORE WORDS

TANAKA 6000 CORE WORDS