adjective, verb, modal particle · all items or people are gathered or ready

人都齐了，我们可以出发了。

adverb, modal particle, idiom, verb · acting simultaneously or with everyone present

大家齐声欢呼。

adjective · to make something level, uniform, or aligned

把这叠纸齐一下。

verb · being at the same level, height, or status; identical

雪已经齐膝深了。

adjective · tidy, even, or in good order

他的牙齿长得很齐。

proper name · Name of various Chinese states and dynasties throughout history, most notably during the Spring and Autumn and Warring States periods

齐国是春秋战国时期的一个强大诸侯国。

proper name · A traditional Chinese surname

齐先生是这家公司的创始人。