吉，說文解字釋為「善也」，裘錫圭先生在于省吾、朱芳圃的基礎上，指出「吉」字「是在具有質地堅實這一特點的句兵的象形符號上加上區別性意符『口』，造成『吉』字來表示當堅實意義講的『吉』這個詞的。……由此可知『吉』的本義就是堅實」。本文以為「吉」字應釋為「是在『斧類兵器』的象形符號上加上區別性意符『口』，造成『吉』字來表示當堅實意義講的『吉』這個詞的」，同時，在裘先生舉的詞例之外，加了花園莊甲骨的「吉弓」、《清華壹．尹至》的「吉志」、「吉好」，以及《清華壹．尹誥》的「吉言」

Ji(吉), Shuo Wen Jie Zi interpreted as ＂good＂. On the basis of Yu Xingwu and Zhu Fangpu, Mr. Qiu Xigui pointed out ＂Ji＂ word ＂is adding a distinctive signifier '口 (mouth)' to the pictograph of a hook weapon which has the feature of solid texture, '吉 (Ji)' word is created to indicate the meaning of solid...... thus the original meaning of 'Ji' is solid.＂ This paper argues that ＂Ji＂ word should be interpreted as ＂adding a distinctive signifier '口(mouth)' to the pictograph of an axe weapon which has the feature of solid texture, '吉(Ji)' word is created to indicate the meaning of solid.＂ Meanwhile, in addition to the examples cited by Mr. Qiu, this paper added other examples such as: ＂Ji bow＂ in Huayuan Village's oracle, ＂Ji will＂, ＂Ji good＂ in Yin Zhi of Tsinghua I ,＂Ji word＂ in Yin Gao of Tsinghua I