There was a gruesome and excruciating silence that threatened to endure forever.
’Oh, no, sir,’ the chaplain hastened to explain with a look of excruciating discomfort.
She tried to trip him with her hand as he scrambled to his feet and scratched an excruciating chunk out of his ankle.
Yossarian moaned instinctively and screwed his face up with excruciating irritability when Aarfy chortled and asked how he was feeling.
Yossarian walked in lonely torture, feeling estranged, and could not wipe from his mind the excruciating image of the barefoot boy with sickly cheeks until he turned the corner into the avenue finally and came upon an Allied soldier having convulsions on the ground, a young lieutenant with a small, pale, boyish face.
He stepped into the briefing room with mixed emotions, uncertain how he was supposed to feel about Kraft and the others, for they had all died in the distance of a mute and secluded agony at a moment when he was up to his own ass in the same vile, excruciating dilemma of duty and damnation.
There are no more uses of "excruciating" in the book.