τεκμαίρεσθαι
From LSJ
Μετὰ τὴν δόσιν τάχιστα γηράσκει χάρις → Post munera cito consenescit gratia → Gleich nach der Gabe altert äußerst schnell der Dank
Greek > English (Woodhouse Verbs Reversed)
(see also τεκμαίρομαι): conjecture, deduce, guess, infer, surmise, judge by, judge of
Lexicon Thucydideum
coniecturam facere, to conjecture, guess, 1.1.1, 3.53.2, 4.123.2.