- extemporaneous
- Synonyms and related words:ad lib, ad libitum, ad-lib, casual, caught napping, caught off balance, caught short, extemporary, extempore, extemporized, haphazard, hasty, impromptu, improvisatorial, improvise, improvised, improviso, impulsive, informal, jury-rigged, makeshift, off the cuff, off-the-cuff, offhand, precipitate, rough-and-ready, snap, spontaneous, spur-of-the-moment, stopgap, surprised, taken aback, taken by surprise, taken unawares, tripped up, unarranged, unbegun, unconcocted, uncontrived, undeliberated, undevised, unhatched, unmade, unmanufactured, unorganized, unplanned, unpremeditated, unprepared, unprimed, unready, unrehearsed, unstudied
Moby Thesaurus. Grady Ward. 1996.