应规蹈矩 yìngguīdǎojǔ to toe the line Origin Definitions Defs Strokes Stroke Words Sentences Sents 应 應 yìng verbnoun to suit (bound form) to suit; to respond to; to comply with规 規 guī noun rules (bound form) established regulations, laws, or norms蹈 dǎo to follow to follow a path or rule; to fulfill; to carry out矩 jǔ noun rules (bound form) rules; customs; regulations; standards of conduct