dissipate (v.)
early 15c., from Latin dissipatus, past participle of dissipare "to spread abroad, scatter, disperse; squander, disintegrate," from dis- "apart" (see dis-) + supare "to throw, scatter," from PIE *swep- "to throw, sling, cast" (cognates: Lithuanian supu "to swing, rock," Old Church Slavonic supo "to strew"). Related: Dissipated; dissipates; dissipating.