in hysterics

== English == === Prepositional phrase === in hysterics (informal) laughing or celebrating very hard and unable to stop. Synonym: in stitches ==== References ==== “in hysterics” in Longman Dictionary of Contemporary English, Longman. “in hysterics” (US) / “in hysterics” (UK) in Macmillan English Dictionary. “in hysterics”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.