ἄβυσσος depthless, i.e. (specially) (infernal) "abyss"Derivation: from G1 (as a negative particle) and a variation of G1037;KJV Usage: deep, (bottomless) pit. G1 G1037
Thayer:1) bottomless 2) unbounded 3) the abyss 3a) the pit 3b) the immeasurable depth 3c) of Orcus, a very deep gulf or chasm in the lowest parts of the earth used as the common receptacle of the dead and especially as the abode of demons
ἄβυσσος abussos ab'-us-sos From G1 (as a negative particle) and a variation of G1037; depthless, that is, (specifically), (infernal) “abyss” KJV Usage: deep, (bottomless) pit.