A name that a person or group chooses for themselves, or a word that is formed from or refers to itself; in linguistics, a self-referential name.
From Greek autos (self) + onyma (name). A linguistic term coined in the 20th century to describe words or names that are self-referential, like 'name' itself being a name.
The word 'noun' is an autonym—it's itself a noun! Or think about how 'English' is English, and 'short' is a short word. These self-describing words create a strange mirror where language talks about itself.
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