This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. 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.

n. The production of such a construction or pronunciation.

n. The use of a nonstandard form due to a belief that it is more formal or more correct than the corresponding standard form.

n. A nonstandard form so used.

"If the usage was ‘very frequent’ 400 years ago, hypercorrection cannot really be the whole reason for its use nowadays."

incorrection   

hyper-correct    hypercorrect    hypercorrectness    hyper-corrective    hyper-correctness