On Tuesday, according to Icasualties.org, an improvised explosive device killed Cpl. William J. Woitowicz in Afghanistan.
He patrolled on foot, and improvised Explosive Devices (IEDs) filled the donkey paths that crisscrossed the wadis and hills.
Yelena Fomina provides free psychological help at an improvised office occupying a former McDonalds ron the corner of the Maidan.
1826, back-formation from improvisation, or else from French improviser (17c.), from Italian improvisare "to sing or speak extempore," from improviso, from Latin improvisus "unforeseen, unexpected" (see improvisation). Or possibly a back-formation from improvisation. Related: Improvised; improvising.