The Oxford Thesaurus An A-Z Dictionary of Synonyms - offhand adj.

1) offhanded, casual, informal, nonchalant, cool, distant, aloof, easygoing, blas‚, 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.