3639 ólethros (from ollymi/"destroy") – properly, ruination with its full, destructive results (LS). 3639 /ólethros ("ruination") however does not imply "extinction" (annihilation). Rather it emphasizes the consequent loss that goes with the complete "undoing."

STRONGS NT 3639: ὀλέθριος

ὀλέθριος, ὀλέθριον (in secular authors also of three term., as in Wis. 18:15) (ὄλεθρος), from (Homer), Herodotus down, destructive, deadly: δίκην, 2 Thessalonians 1:9 Lachmann text

STRONGS NT 3639: ὄλεθρος

ὄλεθρος, ὄλεθρον (ὄλλυμι to destroy (perhaps (ὀλνυμι) allied to Latinvulnus)), from Homer down, rain, destruction, death: 1 Thessalonians 5:3; 1 Timothy 6:9; εἰς ὄλεθρον τῆς σαρκός, for the destruction of the flesh, said of the external ills and troubles by which the lusts of the flesh are subdued and destroyed, 1 Corinthians 5:5 (see παραδίδωμι, 2); equivalent to the loss of a life of blessedness after death, future misery, αἰώνιος (as 4 Macc. 10:15): 2 Thessalonians 1:9 (where L text ὀλέθριον, which see), cf. Wis. 1:12.

STRONGS NT 3639a: ὀλιγοπιστία

ὀλιγοπιστία, ὀλιγοπιστιας, ἡ, littleness of faith, little faith: Matthew 17:20 L T Tr WH, for R G ἀπιστία. (Several times in ecclesiastical and Byzantine writings.)



destruction.

From a primary ollumi (to destroy; a prolonged form); ruin, i.e. Death, punishment -- destruction.

οἷος — 3 Occ.
οἵου — 1 Occ.
οἵους — 2 Occ.
ὀκνήσῃς — 1 Occ.
ὀκνηρέ — 1 Occ.
ὀκνηροί — 1 Occ.
ὀκνηρόν — 1 Occ.
ὀκταήμερος — 1 Occ.
ὀκτὼ — 10 Occ.
ὄλεθρον — 3 Occ.
Ὀλιγόπιστε — 1 Occ.
ὀλιγοπιστίαν — 1 Occ.
ὀλιγόπιστοι — 4 Occ.
ὀλίγα — 6 Occ.
ὀλίγαι — 1 Occ.
ὀλίγας — 2 Occ.
ὀλίγην — 1 Occ.
ὀλίγης — 1 Occ.
ὀλίγῳ — 4 Occ.
ὀλίγων — 1 Occ.