dishonest Play adjectiveBehaving or prone to behave in an untrustworthy, deceitful, or insincere way. SYNONYMS amoralbentcheatingcorruptcraftycriminalcrookedcunningdeceitfuldeceivingdeceptivedesigningdeviousdirtydishonourabledisreputabledodgydouble-dealingdouble-facedfalsefalse-heartedfraudulenthollow-heartedillegalimmoralJanus-facedknavishlyingmalfeasantmendaciousperfidiousrascallyroguishshadysharpshiftyshonkyslimsubtleswindlingtreacheroustrickytruthlessunderhandunethicalunfairunjustunlawfulunprincipledunscrupulousuntrustworthyuntruthful