ὀλοθρεύω (< ὄλεθρος), late (Alex.) form of ὄλεθρεύω ω (cf. MGr., ξολοθρεύω) [in LXX for כָּרַת, שָׁחַת hi., etc. ;] to destroy: Heb.11:28 (cf. ἐξ-ολοθρεύω).† ὀλεθρεύω, see: ὀλοθρεύω ὀλοθρεύω (< ὄλεθρος), late (Alex.) form of ὄλεθρεύω ω (cf. MGr., ξολοθρεύω) [in LXX for כָּרַת, שָׁחַת hi., etc. ;] to destroy: Heb.11:28 (cf. ἐξ-ολοθρεύω).† ὀλεθρεύω, see: ὀλοθρεύω (AS)
Thayer:
1) to destroy
ὀλοθρεύω
olothreuō
ol-oth-ryoo'-o
From G3639; to spoil, that is, slay
ὄλεθρος
olethros
ol'-eth-ros
From ὄλλυμι ollumi a primary word (to destroy; a prolonged form); ruin, that is, death, punishment
KJV Usage: destruction.
G622 ἀπόλλυμιἀπόλλυμι
apollumi
ap-ol'-loo-mee
From G575 and the base of G3639; to destroy fully (reflexively to perish, or lose), literally or figuratively