Wakeful, E.g. a Night Without Any Shut-Eye

This page is the CodyCross answer for the clue below from Space Exploration, Group 920, Puzzle 3 (Black Holes).

Question is: Wakeful, E.g. a Night Without Any Shut-Eye

and the answer is: SLEEPLESS

Word Meaning:

SLEEPLESS — Characterized by an absence of sleep: wakeful.

Definitions from Wiktionary.