定当 dìngdāngdìngdàng certainly must Definitions Defs Origin Strokes Stroke Words Sentences Sents dìngdāng certainly must 定 dìng adverbauxiliary surely surely; certainly; definitely当 當 dāng adverb should Ought to; shoulddìngdàng settled 定 dìng particleverb fixed (bound form) stable; settled; already agreed upon or established by rule当 當 dàng adjective appropriate Suitable; proper; fitting; adequatedìngdāng to disturb · to suffer 定 dìng verb to decide to fix; to set; to determine; to reach a decision当 當 dāng adjective to undertake To bear; to accept; to undertake responsibility