Strong's Greek Concordance provides a definition for "δουλεύω".
"δουλεύω," Blue Letter Bible, accessed on October 4, 2023
to be a slave, serve, do service
of a nation in subjection to other nations
metaph. to obey, submit to
in a good sense, to yield obedience
in a bad sense, of those who become slaves to some base power, to yield to, give one's self up to