mid-15c., outspenden, "to consume totally, use up," from out- + spend (v.). Meaning "to spend more than another or others" is from 1840. Related: Outspent; outspending. Outspent is attested from 1650s as "exhausted, thoroughly spent or wearied."
outsider
outsized
outskirt
outsmart
outsource
outspend
outspoken
outspread
outstanding
outstay
outstretch
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