必定 bìdìng HSK7 certainly Definitions Defs Origin Strokes Stroke Words Sentences Sents bìdìng certainly 必 bì adverb certainly certainly; surely; inevitably; necessarily定 dìng adverbauxiliary surely surely; certainly; definitelybìdìng to be stabilized 必 bì adverb certainly certainly; surely; inevitably; necessarily定 dìng particleverb fixed (bound form) stable; settled; already agreed upon or established by rule