ἀγρυπνέω

ἀγρυπνέω, -ῶ (ἄγρυπνος, seeking sleep ; ἀγρεύω, ὕπνος),

[in LXX chiefly for שׁקד ;]

to be sleepless, wakeful (Theogn., Xen., al.); metaphorically (LXX) = cl. ἐγρήγορα, to be watchful, vigilant: Mark 13,33, Luk 21,36, Ef 6,18, Hebr 13,17.†

SYN.: γρηγορέω, which see; νήφω, associated with γ. in 1 Pet 5,8, expressing a wariness which results from self-control, a condition of moral, not merely mental alertness (see M, Th., I, 5:6).