‖a. [ F., fr. non not (L. non) + chaloir to concern one's self for, fr. L. calere to be warm, to be inflamed with desire, to be troubled. See Non-, and Caldron. ] Indifferent; careless; cool. [ 1913 Webster ]
adv. In a nonchalant, indifferent, or careless manner; coolly. [ 1913 Webster ]