Synonyms for Un rehearsed:

• adj.

  •ad-lib (adjective)
  • extempore,
  • extemporize,
  • made-up,
  • without restraint,
  • Extemporized,
  • at will,
  • spontaneous,
  • improvise,
  • unrehearsed,
  • according to pleasure,
  • as one thinks best,
  • as one wishes,
  • off-the-cuff,
  • ad libitum.
  •extemporaneous (adjective)
  • expedient,
  • toss off,
  • winging it,
  • free,
  • fake,
  • immediate,
  • jamming,
  • ad hoc,
  • automatic,
  • Improvisatory,
  • by ear,
  • on-the-spot,
  • toss out,
  • on impulse,
  • casual,
  • snap.
  •unprepared (adjective)
  • surprised,
  • unaware,
  • unplanned,
  • untrained,
  • unskilled,
  • napping,
  • unready,
  • unexpected,
  • unschooled,
  • taken off guard,
  • vulnerable,
  • caught off guard,
  • not prepared,
  • ill-considered.
  •unrehearsed (adjective)
  • extemporaneous,
  • off the top of one's head,
  • off the cuff,
  • impromptu,
  • unpracticed,
  • improvised,
  • impulsive,
  • not rehearsed,
  • ad-lib,
  • spur of the moment,
  • from the hip,
  • unprepared.

• a. & adv.

  •ad libitum (adjective, adverb)
  • freely,
  • spontaneously.