ὀπίσθιος
From LSJ
οὐ μακαριεῖς τὸν γέροντα, καθ' ὅσον γηράσκων τελευτᾷ, ἀλλ' εἰ τοῖς ἀγαθοῖς συμπεπλήρωται· ἕνεκα γὰρ χρόνου πάντες ἐσμὲν ἄωροι → do not count happy the old man who dies in old age, unless he is full of goods; in fact we are all unripe in regards to time
English (LSJ)
α, ον, (cf. πρόσθιος)
A hinder, belonging to the hinder part, IG12.369.12 ; τὰ ὀ. σκέλεα the hind-legs. Hdt.3.103, X.Eq.11.2 : sg., Arist.HA500b30 ; πόδες Semon.28, Philem.145 ; τένων ὁ ὀ. the tendo Achillis, Hp.Fract.11 ; so ὀπίσθια (sc. μόρια) Arist.GA722b29 ; τὸ ὀ. the hinder part, opp. τὸ πρόσθιον, Id.IA706b1 ; also of the cheek of animals, Id.HA492b23 : Subst. fem. ὀπισθία, hinder part, Epich. 90 ; of stars, following in the daily movement, Cleom.1.1. Adv. -ίως LXX 1 Ki.4.18.