mis ‧ spend /ˌmɪsˈspend/ BrE AmE verb ( past tense and past participle misspent /-ˈspent/) [transitive]
1 . misspent youth someone who had a misspent youth wasted their time or behaved badly when they were young – often used humorously
2 . to use time or money badly or wrongly:
Carey admitted misspending company funds.