ἀκριβόω
Etym. ἀκριβής
1. "to make exact or accurate", Eur.; ἀκρ. τάδε "to be perfect in" bearing these hardships, Xen.:—Pass. "to be or become perfect", Ar.
2. "to investigate accurately, to understand thoroughly", οἱ τάδ᾽ ἠκριβωκότες Eur.; τοὔνομά μου σὺ ἀκριβοῖς; "are you sure of" my name? Plat.