| source : web1913 | Extemporaneous \Ex*tem`po*ra"ne*ous\, a. [See {Extempore}.] Composed, performed, or uttered on the spur of the moment, or without previous study; unpremeditated; off-hand; extempore; extemporary; as, an extemporaneous address or production. -- {Ex*tem`po*ra"ne*ous*ly}, adv. -- {Ex*tem`po*ra"ne*ous*ness},n. | source : wn | extemporaneous adj : with little or no preparation or forethought; "his ad-lib comments showed poor judgment"; "an extemporaneous piano recital"; "an extemporary lecture"; "an extempore skit"; "offhand excuses"; "trying to sound offhanded and reassuring"; "an off-the-cuff toast"; "a few unrehearsed comments" [syn: {ad-lib}, {extemporary}, {extempore}, {offhand}, {offhanded}, {off-the-cuff}, {unrehearsed}]