| improvise(noun, verb, adjective, create, informal) |
| ad-lib(verb, adjective, create, planned, invent) |
| ad lib(noun, expression, idiom, nonpreparation) |
| extemporise(verb, adjective, invent, devise, concoct) |
| wing it(noun, verb, expression, idiom, phrasal verb) |
| make up(verb, expression, phrasal verb, planned, invent) |
| improvize |
| invent(verb, create, devise, contrive, improvise) |
| play by ear(noun, verb, expression, idiom, improvise) |
| devise(verb, improvise) |
| do offhand(verb, expression, idiom, improvise) |
| fake(verb, planned, compose, prepared) |
| improvisate(verb, improvise) |
| knock off(verb, expression, phrasal verb, improvise) |
| toss off(verb, expression, phrasal verb, improvise) |
| play |
| according to pleasure(expression, adjective, idiom, informal, unplanned) |
| ad libitum(expression, adjective, informal, unplanned, off-the-cuff) |
| as one thinks best(expression, adjective, idiom, informal, unplanned) |
| as one wishes(expression, adjective, idiom, informal, unplanned) |