WordRel.com

• remark made spontaneously without prior preparation

  hypernym

  commentinputremark

• with little or no preparation or forethought

  synonym	extemporaneousextemporaryextemporeimpromptuoff-the-cuffoffhandoffhandedunrehearsed
  similar	unprepared

• said or done without having been planned or written in advance

  synonym	spontaneousunwritten
  similar	unscripted

• perform without preparation

  synonym	extemporiseextemporizeimproviseimprovize
  hypernym	doexecuteperform