improvise // improvises, improvising, improvised
 
1 When you improvise, you make something using whatever        VB WITH OR WITHOUT OBJ
materials you have rather than the proper ones, or you carry
out an activity without planning it in advance.
We had to improvise as we went along.
The sisters helped me improvise a toilet.  
· improvised                                                                                 ADJ
Tanks were crossing the river on improvised bridges.
 
2 When actors or musicians improvise, they make up the             VB WITH OR WITHOUT OBJ
words or music while they are performing.
· improvisation                                                                           UNCOUNT N,
There was a good deal of improvisation.                                      COUNT N
...his improvisations on the organ.