Top Definition
the adjective form of insomnia
"Whoah, that chick stays up late... thats soo totally insomniacal of her"

originally invented by Ash from Oregon, cuz sometimes she is insomnical.
by FreakCitySF April 07, 2008
1 more definition
Someone that's always there ..... like they never sleep!
Insomniacal: When the journey's complete it's time to rest
by Alec_EG July 08, 2011

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