traumatic
"Traumatic" is an adjective with two closely related senses — one medical and one emotional. Both revolve around the idea of something causing serious harm or distress, whether to the body or the mind.
In everyday conversation, people sometimes use 'traumatic' more loosely to describe any experience that felt extremely stressful or upsetting — even if it wasn't truly dangerous. This is a figurative stretch of the word, so use it carefully in formal writing.
everyday language · Modern, widely used · figurative
The job interview was absolutely traumatic — I forgot everything I had prepared.