一定之规 yīdìngzhīguī fixed rule Origin Definitions Defs Strokes Stroke Words Sentences Sents 一定 yīdìng determiner fixed fixed; specified; definite; regular; having a set or unchangeable nature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.规 規 guī noun rules (bound form) established regulations, laws, or norms