Noah Webster's Dictionary (a.) Like a rascal; trickish or dishonest; base; worthless; -- often in humorous disparagement, without implication of dishonesty.

Multi-Version Concordance Rascally (1 Occurrence) Proverbs 19:28 A good-for-nothing witness makes sport of the judge's decision: and the mouth of evil-doers sends out evil like a stream. (See NAS)