Root Word: Hyper/Hypo
hypothermia
Condition of having a body temperature that is 'below' normal
Hyper
Over; Overly; Overdoing
Hypo
Under; Below
hyperactive
abnormally or extremely active; 'over'active
hyperventilate
breathe excessively hard and fast; to breathe 'over' what is necessary
hype
exaggerated or excessive publicity; 'over'publication
hypersensitive
excessively sensitive; supersensitive; 'over'sensitive
hyperbole
extreme exaggeration; 'over'exaggeration
hypocritical
professing feelings or virtues one does not have; being 'under' critical of oneself
hypotenuse
Side of a right triangle that is stretched 'under' the right angle
hypochondriac
Someone who 'under'estimates his health as being poorer than it is