opportunity
From LSJ
Δελφῖνα νήχεσθαι διδάσκεις: ἐπὶ τῶν ἐν ἐκείνοις τινὰ παιδοτριβούντων, ἐν οἷς ἤσκηται → Teaching dolphins to swim: is applied to those who are teaching something among people who are already well versed in it
English > Greek (Woodhouse)
subs.
P. and V. καιρός, ὁ.
fitting time: P. εὐκαιρία, ἡ.
opportunity for: P. and V. ἀφορμή, ἡ (gen.). V. εὐμάρεια, ἡ (gen.).
watch for an opportunity against, v.: P. καιροφυλακεῖν (acc.).
when opportunity offers: P. εὖ παρασχόν (acc. absol.).