应机立断 yìngjīlìduàn to act on an opportunity Origin Definitions Defs Strokes Stroke Words Sentences Sents 应 應 yìng verbnoun to suit (bound form) to suit; to respond to; to comply with机 機 jī noun opportunity (bound form) chance; opportunity; occasion立 lì adverb immediately (literary) immediately; at once; right away断 斷 duàn nounverb to judge to judge, decide, or determine; to make a verdict