Abbott-Smith Manual Greek Lexicon
ἀ-κατά-στατος (G182)
2 ἀ-κατά-στατος , -ον ( καθίστημι ), [in LXX: Is 54:11 ( סֹעֲרָה );] unsettled , unstable : Ja 1:8 , 3:8 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain