From The Case for Christ concerning crucifixion:

" The pain was absolutely unbearable," he continued. "In fact, it was literally beyond words to describe; they had to invent a new word: excruciating. Literally, excruciating means 'out of the cross.' Think of that: they needed to create a new word, because there was nothing in the language that could describe the intense anguish caused during the crucifixion."