entries → 應當
TSUMUGU · TOCFL 3 (est.) · 詞
應當 word · TOCFL 3 (est.)
應當 ＝ 應 ＋ 當
ㄧㄥ ㄉㄤ · yīngdāng
verb (modal) — should; ought to; must (moral or logical obligation)

字源 FORM — what the parts do

應should; to respond (答應)yīng
當appropriate; to serve as (當然)dāng
應當，答應的應，當然的當。
關 · Related
應該yīnggāishould — the near synonym, more colloquial必須bìxūmust — stronger obligation than 應當