θητεία
From LSJ
ἐν μὲν γὰρ ταῖς ἐπιστολαῖς αὐτοῦ οὐδὲ μνήμην τῆς οἰκείας προσηγορίας ποιεῖται, ἢ πρεσβύτερον ἑαυτὸν ὀνομάζει, οὐδαμοῦ δὲ ἀπόστολον οὐδ' εὐαγγελιστήν (Eusebius, Demonstratio evangelica 3.5.88) → For in his epistles he doesn't even make mention of his own name — or simply calls himself the elder, but nowhere apostle or evangelist.
English (LSJ)
ἡ, (θητεύω)
A hired service, service, S.OT1029, Isoc.14.48: in pl., ib.11.38, D.H.2.19. 2 servility, sycophancy, c. gen., θ. ὄχλων ἢ δυναστῶν Epicur.Sent.Vat.67.
German (Pape)
[Seite 1211] ἡ, Lohndienst; Soph. O. R. 1029; VLL. μίσθωσις, δουλεία; Isocr. 14, 48 ἐπὶ θητείαν ἰόντες, Ggstz von δουλεύοντες. Von Sp. D. Hal. 2, 19.