一定 yīdìng HSK2 certainly Definitions Defs Origin Strokes Stroke Words Sentences Sents yīdìng certainly 一 yī numeral same same; identical; unified定 dìng adverbauxiliary surely surely; certainly; definitelyyīdìng fair · particular 一 yī numeral one one; the number 1; single; alone定 dìng particleverb fixed (bound form) stable; settled; already agreed upon or established by ruleyīdìng fixed 一 yī numeral same same; identical; unified定 dìng particleverb fixed (bound form) stable; settled; already agreed upon or established by ruleyīdìng once fixed 一 yī adverb [as soon as] Used to show that as soon as one action or situation happens, another follows immediately.定 dìng verb to decide to fix; to set; to determine; to reach a decision