misspend
/mɪsˈspɛnd/
verb
- To spend (time or money) foolishly, wastefully, or in a way that is not beneficial.
- She felt she had misspent her entire afternoon scrolling through social media.
- The company misspent its funds on unnecessary luxury items instead of research.
- He regretted the way he had misspent his youth on trivial pursuits.