Related Clues:
- Proceed without notes, say
- Wing it verbally
- Wing it on stage
- Bit of stage creativity
- Disorient one's co-stars, in a way
- Wing it vocally
- Ignore the cue cards, say
- Stage surprise
- Talk without a script
- Speak impromptu
- Robin Williams forte
- Use whatever materials are to hand
- Speak off the cuff, unrehearsed
- Speak impromptu, improvise
- Speak without any preparation