Strong's G69 — ἀγρυπνέω (verb)
agrupneo (ag-roop-neh'-o) v.
1. to be sleepless, i.e. keep awake
[ultimately from G1 (as negative particle) and G5258]
KJV: watch 
Root(s): G1, G5258 
Hebrew root: ὕπνος
Occurrences: 4