A grammatical mistake, or mispronunciation, made by correcting something that is not actually wrong: A hypercorrection involves a sentence construction, or pronunciation, produced out of a desire to be "correct", as in the substitution of "I" for "me" with the mistaken belief that the following should be "On behalf of my parents and I", or "The secret is between you and I", instead of "The secret is between you and me".