insomnia

Definition

A sleeping disorder that is known for its symptoms of unrest and the inability to sleep.

Etymology

Borrowed from Latin īnsomnia, from Latin in- (“without”) + somnus (“sleep”, noun) + -ia, equivalent to in- + somn- + -ia.

Example Sentences

• "My mother suffers from insomnia."
• "It’s also possible for insomnia to be caused by restless leg syndrome."