A.destructive, deadly, ὀ. ἦμαρ the day of destruction, Il.19.294,409, cf. ἐλεύθερον ἦμαρ, etc. ; so μανίη πάγχυ ὀ. Hdt.l.c. ; “ὀ. μόρος” A.Th.704 ; “ἔξω κομίζων ὀλεθρίου πηλοῦ πόδα” Id.Ch.697 ; κότος ὀ. ib.952 (lyr.) ; “ὀλεθρία νύξ” S.OC1683 (lyr.), etc. ; ψῆφος ὀλεθρία a vote of death, A.Th.198 : in S.Aj.799, ἔξοδον . . ὀλεθρίαν ἐλπίζει φέρειν seems to be = φέρειν εἰς ὄλεθρον : acc. sg. masc. predicatively used, ἀλλά μ᾽ ἁ . . θεὸς ὀλέθριον αἰκίζει fatally, ib.402 (lyr.) :—rare in Prose, as Pl.R.389d, Gal.16.522 ; “νόσοι” Phld.Ir.p.57 W. (Sup.). Adv.“-ίως” Eust.132.16.
2. c.gen., γάμοι Πάριδος ὀλέθριοι φίλων bringing ruin on his friends, A.Ag. 1156 (lyr.).
II. of persons, in danger of death, Hp.Acut.58 ; lost, undone, S.Tr.878. Adv. “-ίως, ἔχειν” Gal.16.522, al.
2. rascally, worthless (cf. “ὄλεθρος” 11 nisi hoc leg.), Luc.DMort. 2.1 codd., Hist.Conscr.38 codd. ὀλεθρ-ιώδης , ες, gloss on λευγαλέη, Hsch.