IPA: /aʊtˈspɛnd/
KK: /aʊtˈspɛnd/
To spend more money than someone else or more than what is available.
She tends to outspend her budget every month.
Past: outspent
Past Participle: outspent
Outspend → It is formed from "out-" (meaning beyond or more than) and "spend" (from Old English "spendan", meaning to expend or use up). The word "outspend" means to spend more than someone else or to exceed in expenditure.
Think of spending 'beyond' ('out-') what you have or what someone else has — that's why outspend means to spend more.