A sad and mildly debilitating condition in which the sufferer will never be exceptional in a chosen discipline or field of study, no matter how hard they work. While incurable, it can often be treated/maintained with a reality check.
I'm sorry Mrs. Smith. You might as well stop your son's violin lessons. He will never be a virtuoso. He has chronic mediocrity syndrome.
by Blursaw March 2, 2010