本文結合文獻資料與方言語料，剖析文獻中有關「幾」的音義及假借問題，並藉由對「幾」的認識，探討閩南語聚訟紛紜的本字問題。「幾」在漢語史上進行了複雜的音義發展變化，文獻所見，可以大別為四種不同的形態。「幾」的四類音義發展到今天，表示少量和疑問的上聲「幾」在共通語中還有活潑的用法，平聲「幾」則只用在「幾乎」、「庶幾」這類固定的文詞彙中。閩南語除保留上聲「幾」的用法之外，還保留平聲「幾」接數詞的用法，並且有創新的發展變化。

This article discusses the problem of ji's original reading and its original phonetic loan forms with evidences from historical documents and modern dialects, thereby suggesting an explanation of the etymon of its reflexes in Southern Min.Ji has undergone drastic change in the development of Chinese language. While 4 types of morphology could be reconstructed, no particular dialect keeps them all today. Thus, the diminutive and interrogative form with rising (上聲) is active in colloquium Mandarin, but the form with level tone(平聲) could be found only in fossil lexicons such as jihu幾乎and shuji庶幾. Southern Min, on the other hand, keeps the level tone form used with quantifier and number words as well as the rising tone form. It is in Southern Min, furthermore, that ji got its innovative developments.