off-the-cuff

from WordNet (r) 3.0 (2006)

off-the-cuff
    adj 1: with little or no preparation or forethought; "his ad-lib
           comments showed poor judgment"; "an extemporaneous piano
           recital"; "an extemporary lecture"; "an extempore skit";
           "an impromptu speech"; "offhand excuses"; "trying to
           sound offhanded and reassuring"; "an off-the-cuff toast";
           "a few unrehearsed comments" [syn: {ad-lib},
           {extemporaneous}, {extemporary}, {extempore},
           {impromptu}, {offhand}, {offhanded}, {off-the-cuff},
           {unrehearsed}]

from The Collaborative International Dictionary of English v.0.48

off-the-cuff \off-the-cuff\ adj.
   with little or no preparation or forethought; unrehearsed;
   extemporaneous; offhand. his off-the-cuff remarks offended
   many people; an off-the-cuff toast

   Syn: ad-lib, extemporaneous, extemporary, extempore, offhand,
        offhanded, unpremeditated, unrehearsed.
        [WordNet 1.5]