Kanji 矩 ruler, carpenter's square 準 semi-, correspond to, proportionate to Related words 規き 範はん 規範 is a more common word for 'norm' or 'standard', while 規矩準縄 is a formal, literary yojijukugo with a similar meaning.
基き 準じゅん 基準 is a general term for 'standard' or 'criterion', used in everyday contexts, whereas 規矩準縄 is more formal and often used in abstract or ethical discussions.
Etymology A yojijukugo composed of four characters: 規 (rule), 矩 (carpenter's square, standard), 準 (standard, norm), and 縄 (rope, measure). Together they metaphorically refer to tools for measurement, hence 'rules and standards'. The exact historical derivation is uncertain, but the phrase is used in classical Chinese texts.
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