一下 yīxià [briefly] Origin Definitions Defs Strokes Stroke Words Sentences Sents yīxià [briefly] 一 yī numeralparticle [brief action] Used between a repeated verb to show that the action is brief, casual, or an attempt.下 xià measure wordparticle times measure word for the frequency of an action or a brief stroke of effortyīxià once 一 yī numeral one one; the number 1; single; alone下 xià measure wordparticle times measure word for the frequency of an action or a brief stroke of effortyīxià all at once 一 yī adverbnumeral [suddenness] Used before a verb to indicate that an action or situation occurs suddenly or unexpectedly.下 xià measure wordparticle times measure word for the frequency of an action or a brief stroke of effort