'hysterically' originates from the Greek word 'hystera,' meaning 'womb,' reflecting the ancient belief that hysteria was caused by disturbances in the uterus.

'hystera' transformed into the Latin word 'hystericus,' and eventually became the modern English word 'hysterical' through Middle English.

Initially, it referred to a medical condition thought to be specific to women, but over time it evolved into its current meaning of 'uncontrollably emotional.'