一反常态 yīfǎnchángtài out of character Origin Definitions Defs Strokes Stroke Words Sentences Sents 一 yī adverbnumeral [suddenness] Used before a verb to indicate that an action or situation occurs suddenly or unexpectedly.反 fǎn noun opposite opposite; reverse; contrary; inside out or upside down常态 常態 chángtài noun normality a normal state; usual behavior or conditions