“佻脱”是汉魏六朝时的一个新词 ,其义至今歧说纷纭。本文通过对该词的产生、构成、词形以及后世的流传等方面的综合考察 ,认为“佻脱”是用来描写人的语言、行为、举止轻浮简慢的形容词 ,而非目前所流行的表示假设的副词。此外 ,本文还针对《汉语大词典》有关该词的立目和释义等提出了修改意见 “Take off” is a new word in the Han, Wei and Six Dynasties, its meaning has divergent so far. Through a comprehensive review of the production, composition, form of the word and the spread of later generations, this article argues that “deny” is an adjective used to describe a person’s language, behavior, and demeanor, rather than the current popular expression Assumption of adverbs. In addition, this article also proposed amendments to the “Chinese Dictionary” on the erection and interpretation of the word