《說文解字》認爲「羑」是一個从羊、久聲的形聲字。而從傳世文獻及出土 文獻中的通假材料來看，「羑」更有可能是一個聲紐爲舌音而韻部爲幽部或與之 讀音相近的字。馬敘倫認爲「羑」是「羞」之訛文。通過與相關文字形體的比較 分析，本文認爲馬敘倫的說法基本上是可信的，更準確地說「羑」是「羞」的變 形分化字，「羑」字完成變形分化的時代應該是在漢代。

According to Shuowen Jiezi(說文解字), you(羑) is a phonogram with yang (羊) as the semantic component and jiu(久) as the phonetic component. On the other hand, evidence from both received and excavated texts suggest that the phonetic component of you(羑) is more likely to be in the dental initial groups and you(幽) rhyme group(or a rhyme group close to you). Ma Xulun(馬敘倫)has argued that you (羑) resulted from a miswriting of xiu(羞). Through analysis of variant forms and comparisons with related graphs, the present paper agrees with Ma Xulun and further argues that you(羑) is a character derived from xiu(羞) and that the derivation is completed during Han Dynasty.

「羑」字;「羞」字;分化;漢代

you(羑);xiu(羞); graphic derivation;Han Dynasty