(ˈ)mi|strēt transitive verb
Etymology: Middle English mistreten, probably from Middle French mestreitier, mestraitier, from Old French, from mes- mis- (I) + treitier, traitier to treat — more at treat
: to treat badly : abuse
administered a public thrashing to the landlord who had mistreated his brother — C.V.Woodward
• mis·treatment “+ noun