adv. [ L. ex out + tempus, temporis, time. See Temporal. ] Without previous study or meditation; without preparation; on the spur of the moment; suddenly; extemporaneously; as, to write or speak extempore. Shak. -- a. Done or performed extempore. “Extempore dissertation.” Addison. “Extempore poetry.” Dryden. -- n. Speaking or writing done extempore. [ Obs. ] Bp. Fell. [ 1913 Webster ]