Definition of "hypercorrection" [hypercorrection]

• A construction or pronunciation produced by mistaken analogy with standard usage out of a desire to be correct, as in the substitution of I for me in on behalf of my parents and I. (noun)
• The production of such a construction or pronunciation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "If the usage was ‘very frequent’ 400 years ago, hypercorrection cannot really be the whole reason for its use nowadays."
• "But stablishment seems to be a case of hypercorrection that removes an e that really should be there."
• "Oh, the “who/whom” business is absolutely hypercorrection."