The Collaborative International Dictionary
Mispronounce \Mis`pro*nounce"\, v. t. & i. [imp. & p. p. Mispronounced; p. pr. & vb. n. Mispronouncing.] To pronounce incorrectly.
Wiktionary
n. mispronunciation vb. (present participle of mispronounce English)
Usage examples of "mispronouncing".
Zed had stopped him just before he insulted them both by mispronouncing their names.
Odd, but as soon as Calum made the mention that she was speaking Gaelic, she started tripping over her words and mispronouncing something fierce.
Even her customers were subjected to readings and were filled with admiration for Mama, who had a strikingly imaginative way of mispronouncing the technical terms.
Jessie was referring to Satan, but never having read the unfamiliar name before, he was mispronouncing it as “Satin,” like the fabric.
She seems fairly sloshed throughout the film, frequently mumbling or mispronouncing lines, totally garbling Spanish phrases, and querulously complaining that the words she's been told to recite don't make any sense.