IPA: /aʊtˈɜrn/
KK: /aʊtˈɜrn/
To earn a greater amount of money than someone else or than a previous amount.
She managed to outearn her colleagues this year by working extra hours.
Past: outearned
Past Participle: outearned
Outearn is formed from "out-" (meaning beyond or more than) and "earn" (from Old English "earnian", meaning to earn or to gain). The word "outearn" means to earn more than someone else or to surpass in earnings.
Think of earning 'beyond' ('out-') what someone else earns — that's why outearn means to earn more.