verb (used with object), o·ver·pro·nounced, o·ver·pro·nounc·ing.
to pronounce (a word, syllable, etc.) in an exaggerated, affected, or excessively careful manner.
verb (used without object), o·ver·pro·nounced, o·ver·pro·nounc·ing.
to pronounce or speak overcarefully, affectedly, exaggeratedly, etc.: When he overpronounces that way, he seems to be patronizing his audience.
Origin of overpronounce
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019