ἄτροπος

ον, ἡ
A. not to be turned, unchangeable, eternal, ὕπνος Theoc. 3.49.
2. inflexible, rigid, Ἅιδης AP 7.483; ἀρετή ib.10.74 (Paul. Sil.): pr. n., Ἄτροπος,ἡ, name of one of the Μοῖραι, Hes. Th. 905, al., Pl. Lg. 960c, Chrysipp.Stoic. 2.264; ἄ. Κλωθώ IG 3.1337: hence of the decrees of fate, ἄτροπα γραψάμεναι Epigr.Gr. 153.4; ἄ. νόμος ib.288 (Cypr.).
3. uncourteous, unseemly, ἔπεα Pi. N. 7.103.
II. not turned by the plough, untilled, Call. Del.II.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project