adj. 1 offhanded, casual, informal, nonchalant, cool, distant, aloof, easygoing, blasé, unceremonious, relaxed, easy, smooth, unconcerned, insouciant, light-hearted, uninterested, superficial, cursory, cavalier, careless His offhand reaction shows that he doesn't care as much about her as we thought 2 curt, brusque, abrupt, perfunctory, ungracious, glib, smooth When asked when he expected to pay, he gave an offhand reply 3 extempore, impromptu, unpremeditated, unstudied, extemporaneous, informal, off the cuff, ad lib She rose to make some offhand comments about the accomplishments of the guest of honour
adv. 4 extempore, impromptu, extemporaneously, informally, off the cuff, ad lib, on the spur of the moment, at the drop of a hat That was a pretty good speech considering it was made offhand 5 casually, informally, incidentally, by the way, offhandedly, by the by, parenthetically, in passing, en passant, cursorily, superficially Offhand, I'd say that the two of them deserve each other