1. With little or no preparation or forethought
   "an extemporary lecture"
   - ad-lib, extemporaneous, extempore, impromptu, offhand, offhanded, off-the-cuff, unrehearsed

See also: extemporarily, unprepared

• PAC
• pac-man strategy
• paca
• pace
• pace car
• pace lap
• pacemaker
• pacer
• pacesetter
• pacha
• pachinko
• pachisi
• pachouli
• pachuco
• Pachycephala
• pachycephalosaur
• pachycephalosaurus
• pachycheilia
• pachyderm
• pachyderma
• pachydermal
• pachydermatous
• pachydermic
• pachydermous
• Pachyrhizus