きそう combines the on'yomi 起 (き) meaning "start" and 草 (そう) meaning "grass/rough draft." きそ misreads 草, and きくさ incorrectly uses its kun'yomi. This term refers to the act of drafting a document, preparing a preliminary version or rough copy before its finalization.
きそうは、起(き)と草(そう)の音読みです。「きそ」は草の読み間違い、「きくさ」は訓読みの誤用です。文書の原案や草案を作成すること、書き始めることを指します。
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