ἀμισθί
From LSJ
τὰ ἀφανῆ τοῖς φανεροῖς τεκμαίρου → analyze the unknown based on the known
English (LSJ)
Adv. of ἄμισθος,
A without reward or hire, Archil.41. E.Tr. 409, D.24.99; rent-free, SIG344 (Teos); χρημάτων καὶ δόξης ἀ. without reward of money or honour, Plu.Arist.3; ἀ. ἐπαινεθέντες only paid with praise, Brut.Ep.38; ἀ. θεάσασθαι without paying, Plu.CG 12. [ῐ Archil. l.c.]