Explanation of hysterical (adjective) forms: more hysterical; most hysterical; less hysterical; least hysterical someone in an uncontrollable state of agitation; excitement panic or other strong emotion
Sample of hysterical The patient became hysterical when the drug wore off.
Explanation of perpendicular (adjective) straight; vertical
Sample of perpendicular When a charged particle moves perpendicular to a constant, uniform magnetic field, this results in a circular motion with constant speed.