Top definition
A person who is plagued with illness constantly. Their vitals usually show no abnormalities, yet pain, fatigue, discomfort, disorientation, and weird feelings indicate something is wrong within the body; or mind...
Too bad Herb is an illsomniac and cannot go to the pumpkin patch with us, he always seems to have something physically wrong that inhibits him from having fun.
by jillsomniac August 28, 2008
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