1 definition by XalexegX

Top Definition
When people use big words to impress people, but it's obvious they've just been reading through a dictionary or thesaurus.
Signs of thesaurus speech include wrong pronunciation, and grammatically incorrect use.
Did you hear that guy pronounce overzealous like "over-zeel-us?" "Yeah, Thesaurus speech is funny.
by XalexegX July 04, 2011

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