rascally
Definitions
Characteristic of a mischievous or dishonest person.
Playfully or roguishly dishonest; knavish.
Examples
The rascally puppy chewed up my favorite pair of leather shoes while I was out.
With a rascally glint in his eye, the boy hid his sister's doll behind the sofa.
The rascally fox managed to sneak into the coop and steal an egg without waking the farmer.
Synonyms
mischievous nefarious villainous impish scoundrelly knavish roguish
Antonyms
honorable virtuous upright noble honest principled trustworthy