misspend
From Longman Dictionary of Contemporary Englishmisspendmis‧spend /ˌmɪsˈspend/ verb (past tense and past participle misspent /-ˈspent/) [transitive] 1 → misspent youth2 WASTE somethingto use time or money badly or wrongly Carey admitted misspending company funds.→ See Verb tableExamples from the Corpusmisspend• Their business manager misspent millions of the couple's money.