offhand

adv.

[1]	offhanded , offhandedly
[2]	offhanded , extempore , impromptu , offhandedly , extemporaneously , informally , off the cuff , ad lib , on the spur of the moment , at the drop of a hat
[3]	casually , informally , incidentally , by the way , offhandedly , by the by , parenthetically , in passing , en passant , cursorily , superficially

adj.

[1]	ad-lib , offhanded , casual , extemporaneous , extemporary , informal , nonchalant , extempore , impromptu , cool , distant , offhanded , off-the-cuff , aloof , easygoing , unrehearsed , unceremonious , relaxed , easy , smooth , unconcerned , insouciant , light-hearted , uninterested , superficial , cursory , cavalier , careless
[2]	curt , offhanded , brusque , abrupt , perfunctory , ungracious , glib , smooth
[3]	extempore , impromptu , unpremeditated , unstudied , extemporaneous , informal , off the cuff , ad lib