Abbott-Smith Manual Greek Lexicon
ἀγρυπνία (G70)
2 ** ἀγρυπνία , -ας, ἡ (v. supr.), [in LXX: Si 9 , II Mac 2:26 *;] sleeplessness , watching : II Co 6:5 11:27 . (Plat., Hdt.; for exx. in π. , v. MM, VGT, s.v.).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain