ὑπηρετέωhypēretéō

to be a subordinate, i.e. (by implication) subserve

Greek (New Testament) · G5256

Meanings

properly, to serve as rower on a ship (Diod., and elsewhere). In classical Greek always metaphorically, to minister to, serve: with dative of person, Acts 13:36, Acts 20:34, Acts 24:23.

Same root

ὑπηρέτηςhypērétēs · G5257an under-oarsman, i.e. (generally) subordinate (assistant, sexton, constable)

Where it appears

Appears 3 times in the Bible.

Acts 13:36 This is not a reference to David, for after David had done the will of God in his own generation, he died and was buried with his ancestors, and his body decayed.
Acts 20:34 You know that these hands of mine have worked to supply my own needs and even the needs of those who were with me.
Acts 24:23 He ordered an officer to keep Paul in custody but to give him some freedom and allow his friends to visit him and take care of his needs.

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.