[ out-spend ]
/ ˌaʊtˈspɛnd /
verb (used with object), out·spent, out·spend·ing.
Origin of outspend
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
mid-15c., "to consume totally, use up," from out (adv.) + spend (v.). Meaning "to spend more than another or others" is from 1840. Related: Outspent; outspending. Outspent is attested from 1650s as "exhausted."
Online Etymology Dictionary, © 2010 Douglas Harper