Inability to Sleep at Night
This page is the CodyCross answer for the clue below from London, Group 489, Puzzle 1 (Millennium Bridge).
Question is: Inability to Sleep at Night
and the answer is: INSOMNIA
Word Meaning:
INSOMNIA — (medicine) A sleeping disorder that is known for its symptoms of unrest and the inability to sleep.
Definitions from Wiktionary.