adv. phr. Even a little; in any degree or amount. Used in negative, interrogative, and conditional sentences. Sue did not understand physics in the least. Are you in the least interested in sewing? Mother won't be upset if you come for supper; I'll be surprised if she cares in the least. Mike was not upset in the least by the storm. It is no trouble to help you. Not in the least.
Compare: AT ALL.