timeserver

plural timeservers · alternative time-server

1. A person who conforms to current opinions, especially for reasons of personal advantage; an opportunist.First known use 16th c.

   Another of Lilly's confidants was the time-server, John Gauden, who was distinctly anti-Laudian in outlook, but who nevertheless became Bishop of Worcester at the Restoration.

   1971, Keith Thomas, Religion and the Decline of Magic, Folio Society, published 2012, page 355

2. Someone who performs a job for the required time only, making a minimum of effort.First known use 19th c.
3. computingA device, node or program that transmits the correct time to clients in a network.
4. obsoleteSomeone who honors their commitments only when it is personally easy to do so.First known use 16th c.