RichThesaurus
do something on the spur of the moment
do something on the spur of the moment
synonyms
do something off the top of one's head
improvise
play it by ear
busk it
cobble something together
make it up as one goes along
extemporize
throw something together
wing it
think on one's feet
take it as it comes
do something off the cuff
ad lib
do something on the spur of the moment
antonyms