- done, spoken, performed, etc., without special advance preparation; impromptu: an extemporaneous speech.
- previously planned but delivered with the help of few or no notes: extemporaneous lectures.
- speaking or performing with little or no advance preparation: extemporaneous actors.
- made for the occasion, as a shelter.
- spoken, performed, etc, without planning or preparation; impromptu; extempore
- done in a temporary manner; improvised
