MISSPEAK
mispronounce, misspeak
(verb) pronounce a word incorrectly; “She mispronounces many Latinate words”
Source: WordNet® 3.1
Etymology
Verb
misspeak (third-person singular simple present misspeaks, present participle misspeaking, simple past misspoke, past participle misspoken)
(ambitransitive, chiefly, US) To fail to pronounce, utter, or speak correctly
(intransitive, obsolete) To speak insultingly or disrespectfully.
Source: Wiktionary
Mis*speak", v. i.
Definition: To err in speaking.
Mis*speak", v. t.
Definition: To utter wrongly.
Source: Webster’s Unabridged Dictionary 1913 Edition