From Middle English misseien, misseggen, equivalent to mis- + say. Cognate with Middle Dutch misseggen (“to missay”).
missay (third-person singular simple present missays, present participle missaying, simple past and past participle missaid)
- (transitive, archaic) To speak ill of (someone).
- (obsolete, intransitive) To say something erroneous; to speak wrongly.
- 1590, Edmund Spenser, The Faerie Queene, III.2:
- The worde gone out she backe againe would call, / As her repenting so to have missayd [...].