taken unawares

36 Moby Thesaurus words for "taken unawares":
      ad-lib, astonished, caught napping, caught off balance,
      caught short, extemporaneous, extemporized, haphazard, hasty,
      impromptu, improvised, makeshift, precipitate, rough-and-ready,
      snap, struck with surprise, surprised, taken aback,
      taken by surprise, tripped up, unarranged, unbegun, unconcocted,
      uncontrived, undeliberated, undevised, unhatched, unmade,
      unmanufactured, unorganized, unplanned, unpremeditated, unprepared,
      unprimed, unready, unstudied