Definition of “expend” - Learner’s Dictionary

expend

verb [ T ] us uk /ɪkˈspend/ formal

to use effort, time, or money to do something:

[ + doing sth ] You expend / far too much energy doing things for other people.
Governments expend / a lot of resources on war.

(Definition of “expend” from the Cambridge Learner's Dictionary © Cambridge University Press)