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Also "insomnambulism"

The act of wandering around your house at night because you can't sleep.

A portmanteau of insomnia (habitual sleeplessness or the inability to sleep) and somnambulism/somnambulation (sleepwalking or performing other acts while asleep).
Jeff: Dude, were you wandering around the apartment last night? I swear I heard you walk past my door twenty times.
Gary: Sorry man, I couldn't sleep, so I was wandering around the apartment.
Jeff: Next time, can you try to confine you insomnambulation to one room?
by MrGryphon April 21, 2013
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