неуловимый
From LSJ
τοῦ εἰδέναι χάριν ἡ πραγματεία → knowledge is the object of our inquiry, the aim of our investigation is knowledge
Russian > Greek
δραπέτης, δραπέτας, δρηπέτης, ἀμήχανος, ἀμάχανος, ἀνέτοιμος, ἀκίχητος, ἀτέκμαρτος, ἄληπτος, ἀσύμβλητος, ἀξύμβλητος, δυσάλωτος