WordWeb Online

1. Perform without preparation
   "he extemporised a speech at the wedding"
   - improvise, improvize [non-standard], ad-lib, extemporize
    
2. Manage in a makeshift way; do with whatever is at hand
   "after the hurricane destroyed our house, we had to extemporise for weeks"
   - improvise, extemporize

Derived forms: extemporising, extemporised, extemporises

See also: extemporisation [Brit]

Type of: contend, cope, deal, do, execute, get by, grapple, make do, make out, manage, perform

Encyclopedia: Extemporise