Definitions for "Mispronunciation"
Wrong or improper pronunciation.
incorrect pronunciation
Mispronunciation is defined by the Oxford English Dictionary as "bad pronunciation". The matter of what is or is not mispronunciation is a contentious one, and indeed there is some disagreement about the extent to which the term is even meaningful. (It is interesting to note that even the word "pronunciation" itself is commonly mispronounced or misspelled as "pronounciation.")