misexpend
/mɪsˈɛksˌpænd/ or /mɪsˈɛksˌpɛnd/Definitions
1. verb
to spend money or resources foolishly or wastefully
“She misexpend a large portion of her inheritance on reckless investments.”
2. noun
an act of spending money or resources foolishly or wastefully
“His misexpend of company funds led to his termination.”