overcommits
/ˌoʊvərkəˈmɪts/
verb
- Third person singular form of overcommit: promises to do more than one can realistically accomplish.
- My friend always overcommits to social events and then cancels at the last minute.
- He overcommits his energy by saying yes to every request.
- The manager overcommits the team's time, so they often work late.