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

• surer
• sures
• surest
• sure thing
• sure things
• swatchbooks
• swatches
• swath
• swathe
• swathed
• swathes
• swathier
• swathiest
• swathing
• swathing-clothes
• swathling-clouts
• swaths
• swathy
• swats
• swatted
• swatter
• swattered
• swattering
• sugar-refining
• sugars