一念之差 yīniànzhīchā momentary slip Origin Definitions Defs Strokes Stroke Words Sentences Sents 一念 yīniàn a single thought A single thought or an instant; the very moment a thought arises.之 zhī particle [possessive] Connects a describing word or phrase to the noun it describes, similar to 的 de but used in formal or literary writing.差 chā nounverb mistake mistake; error; an unintentional fault