n. 25B6; noun
a rogue without ethics : SCOUNDREL, villain, miscreant, reprobate, rascal, good-for-nothing, ne'er-do-well, wretch; informal rat, dog, louse, crook; informal, dated rotter, bounder, blighter; dated cad; archaic blackguard, knave.
your boy's a little rogue : RASCAL, imp, devil, monkey; informal scamp, scallywag, monster, horror, terror, tyke; Brit. informal perisher; N. Amer. informal hellion.