Abbott-Smith Manual Greek Lexicon
ἀκαταστασία (G181)
5 † ἀκαταστασία , -ας, ἡ ( ἀκατάστατος ), [in LXX: Pr 26:28 ( מִדְחֶה ), To 4:13 *;] instability (MM, VGT , s.v.); hence, confusion , tumult : I Co 14:33 , Ja 3:16 ; pl. (Bl., §32, 6), Lk 21:9 , II Co 6:5 , 12:20 (Polyb., al.; v. Cremer, 739).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain