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

• off colour
• off-colour
• off-coloured
• off-come
• off-comer
• off-comers
• off-comes
• pronging
• prongs
• pronk
• pronked
• pronking
• pronkings
• pronks
• pronominal
• pronominally
• pronota
• pronotal
• pronotum
• pronoun
• pronounce
• pronounceable
• pronounced
• pronouncedly
• pronouncement