rascally Get Printable Handwriting (ras-cal-ly) 3 syllables Learn It! Spelling Test Definition adjective. 1 playful in an appealingly bold way; 2 lacking principles or scruples Example Sentence He gave her a rascally grin. OR The rascally con man stole her money. Synonyms devilish; roguish; playful; scoundrelly; roguish Antonyms unplayful; serious; sober; honest Share with your friends: