improv
Word family
- improviseverbB2
- improvisationnounB2
- improvisedadjectiveB2
- improvisernounC1
Synonym discussion
Sense: noun/1
All four words point to performing without a script, but learners use them in different settings. 'Improv' is the everyday short form, heard most often in comedy and acting circles — 'I take improv classes on weekends'. 'Improvisation' is the fuller, more formal noun and extends beyond theatre to music, dance, and even cooking — 'jazz improvisation', 'a chef's improvisation with leftover vegetables'. 'Ad-lib' usually means a single unplanned remark added into an otherwise prepared speech or scene — 'the actor's funniest ad-lib got the biggest laugh'. 'Extemporization' is rare and academic, used in writing about music theory or rhetoric; almost no one says it in casual conversation.
Common collocations
Etymology
A late-twentieth-century shortening of 'improvisation', which itself came into English from French 'improvisation' and ultimately from Latin 'improvisus' meaning 'not foreseen' (from 'in-' 'not' + 'provisus' 'foreseen, provided for'). The short form 'improv' spread from American theatre and stand-up comedy scenes in the 1960s–70s and is now the default term in spoken English.