misspeak (v.)

also mis-speak, late 14c., misspeken, "say amiss," also "speak insultingly (of)," from mis- (1) "badly, wrongly" + speak (v.). From 1590s as "pronounce wrongly;" by 1890 as "speak otherwise than according to one's intentions." Related: Misspeaking; misspoken. Old English missprecan meant "to grumble, murmur;" In Middle English, misispeken "to say sinful things" is from early 13c.