impromptu /im-prompˈtū/

1. Improvised, spontaneous, unrehearsed
2. Makeshift

1. Without preparation
2. On the spur of the moment

1. An extempore witticism or speech
2. An improvised composition
3. A musical composition with the character of an extemporization

• planimetric
• planimetrical
• planimetries
• planimetry
• planing
• planing bottom
• planing bottoms
• planing-machine
• planing-machines
• planish
• planished
• planisher
• planishers
• planishes
• planishing
• planisphere
• planispheres
• planispheric
• plank
• plank bed
• plank beds
• planked
• planking
• plankings
• planks