say it: hi-STER-i-kuhl
hysterical is an adjective meaning "characterized by or arising from psychoneurotic hysteria". It carries 2 recorded senses.
marked by excessive or uncontrollable emotion
“hysterical laughter”
“a mob of hysterical vigilantes”
Definitions, synonyms and semantic relations for hysterical come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.