Abbott-Smith Manual Greek Lexicon
ἀ-στήρικτος (G793)
2 *† ἀ-στήρικτος , -ον ( στηρίζω ), unstable , unsettled : II Pe 2:14 3:16 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain
Strong's G793 · Greek
ἀστήρικτος
asteriktos · as-tay'-rik-tos
from 1 (as a negative particle) and a presumed derivative of 4741; unfixed, i.e. (figuratively) vacillating