mishaveEtymologyFrom Middle English *mishaven, from Old English *mishabban, attested in derivative mishabbende (“having ill”), equivalent to mis- + have.mishave means to misbehave or misconduct (oneself); do wrong. Lexicurio rates it Sui generis — a strength score of 87 out of 100.verbTo misbehave or misconduct (oneself); do wrong.“It is agreed […] that if anie servaunte […] shall by fighting, quarrelling or other unsemelie maner at anie time herafter misdemeane or mishave himself and therof be ones monished or warned […]”