Of, or arising from hysteria. / Having, or prone to having hysterics. / Provoking uncontrollable laughter.

In a hysterical manner; showing signs of hysteria. / With, or causing, very much laughter.

plural of hysteric

Hysteria.

(medicine) Hysterical; relating to hysteria.

A hysterical person.

The act of becoming hysterical.

(obsolete) Synonym of metritis

(informal) laughing very hard and unable to stop.

plural of hysterization