καίριος (kairios)

1. of Place, in or at the right place , hence of parts of the body, ἐν καιρίῳ, κατὰ καίριον in a vital part , (Iliad by Homer); also, of wounds, πέπληγμαι καιρίαν πληγήν, καιρίας πληγῆς τυχεῖν (Aeschulus Tragicus); πληγή is sometimes omitted, (Herdotus Historicus):—; adverb -ίως, mortally , (Aeschulus Tragicus)
2. of Time, in season, seasonable, timely, opportune , (Herdotus Historicus)
3. lasting but for a season , [variant datesAnthology Palantina
4. adverb -ρίως, in season, seasonably , (Aeschulus Tragicus): comparative -ωτέρως (Xenophon Historicus):—;so also, πρὸς τὸ καίριον (Sophocles Tragicus) (ML)