a mistake in writing or speech caused by someone trying to show that they know how to use language correctly according to the rules when in fact the form that they are using is wrong

Hypercorrection is also responsible for things like the use of "whom" instead of "who" whenever someone wants to sound more fancy. 矫枉过正的情况还包括像用“whom”代替“who”来让自己听起来优雅一些。

I'm most pedantic about hypercorrections such as using "I" as an object in "you and I". 我对矫枉过正的用法非常较真，比如在做宾语词组的“you and I"里用主格的“I”（而不是“me” ）。