ex·tem·po·rar·y 
(ĭk-stĕmpə-rĕr′ē)
(ĭk-stĕmpə-rĕr′ē)adj.
Spoken, done, or composed with little or no preparation or forethought: an extemporary lecture.
[From EXTEMPORE.]
ex·tem′po·rari·ly (-rârə-lē) adv.
- double Gloucester
- double-handed
- doublehanded
- double-handedly
- double-header
- doubleheader
- double helix
- double-hung window
- double indemnity
- double jeopardy
- double-jointed
- double knit
- double-knit
- double negative
- doubleness
- double-park
- double-parker
- double play
- double pneumonia
- double possessive
- double-quick
- doubler
- double reed
- double-reed
- double refraction