1. in an uncontrollably emotional way, especially with wild crying or laughter
2. in an extremely funny way
Usage: informal

Examples

• She laughed hysterically at the comedian’s jokes.
• The child cried hysterically when he lost his toy.
• The audience reacted hysterically to the surprise announcement.
• That movie was hysterically funny.
• She was sobbing hysterically after hearing the bad news.
• The fans screamed hysterically when their team won.
• His impression of the teacher was hysterically accurate.