hysterical

adjective

• 1deriving from or affected by uncontrolled extreme emotion:hysterical laughter the band was mobbed by hysterical fans
• informal extremely funny:her attempts to teach them to dance were hysterical

• 2 Psychiatry relating to, associated with, or suffering from hysteria:the doctor thinks the condition is partly hysterical
• another term for histrionic (denoting personality disorder).