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A word that is an irregular extension or formation of an existing word in order to imply extra connotations or suggest further associations from the meaning of the root word. Like the words synonym, antonym and homonym, the word extonym is derived similarly: Ext- (extend) + "onyma" (Greek for "name").
An extonym for the word "moustache" is "moustachioed", e.g. a "moustachioed" man is not simply a man with a moustache but implies the moustache is the defining feature of his character.

An extonym for the word "speech" is "speechifying", e.g. "The politician finished speechifying the audience and quickly left." Therefore the politician does not simply make a speech but the connotations are that the giving of the speech was the function of the politician's role, not intended sincerely, and in turn the audience has tolerated this ritual with a suggestion it has been covered in an aural equivalent of bulldust.

An extonym for the word "feral" is "feralated", e.g. "The shoppers went wild at the Xmas sale, leaving the shop assistants feralated by the end of the morning." The implication is that the shop assistants have not simply been tested by heavy traffic but the normally domesticated shoppers have been so wild that the shop assistants have been wrung out, if not personally violated, by the abandonment of civilised standards.
extonym by Dr Euan Mitchell December 22, 2005
Words you can keep
the name foreigners use to describe a country or city

in contrast to endonym -- the name the natives use
exonym example...IRELAND (pronounced IRE-LAND) an appropriate EXONYM as they are always so bloody angry -- and ironically somebody will probably be angry that it has been pointed out to them

endonym example...ERIE (pronounced ERROR) an appropriate ENDONYM to acknowledge their mistake in leaving the United Kingdom
exonym by Dobbin1969 September 20, 2014
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