The Collaborative International Dictionary of English v.0.48:
Missay \Mis*say"\, v. t. 1. To say wrongly. [1913 Webster] 2. To speak evil of; to slander. [Obs.] [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Missay \Mis*say"\, v. i. To speak ill. [Obs.] --Spenser. [1913 Webster]