adv
In a hysterical manner; showing signs of hysteria.
With, or causing, very much laughter.
ADJ.
all
VERB + HYSTERICALLY
began, cry, crying, laugh, laughed, laughing, started
HYSTERICALLY + NOUN
explosions
PREP.
from
He started laughing hysterically.
She started laughing hysterically.
Tom laughed hysterically.
Tom laughed hysterically for no reason.
Tom was laughing hysterically.
The audience laughed hysterically.