roguish UK /ˈɹəʊɡɪʃ/US /ˈɹoʊɡɪʃ/ adjective2 •Unprincipled or unscrupulous. •Mischievous and playful."She'll be a match for poor little Cupid, with his tiny bow and arrow, I dare say," said Grace Fitzgerald, with a roguish eye. — 1840 formsmore roguish · most roguish