1. Perform without preparation
   "he extemporised a speech at the wedding";
   - improvise, improvize [non-standard], ad-lib, extemporize, wing [informal], wing it [informal]
    
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: extemporised, extemporises, extemporising

Type of: do, execute, get by, make do, manage, perform

Encyclopedia: Extemporise