excruciating
Extremely painful or very hard and uncomfortable to endure.
Excruciating means extremely painful or intensely difficult to endure. The word describes pain so severe it feels almost unbearable: the excruciating pain of a broken bone, or the excruciating sensation of touching something burning hot.
Excruciating doesn't only describe physical pain. You might sit through an excruciating piano recital where every note sounds wrong, or endure the excruciating embarrassment of tripping in front of your entire class. A math problem can be excruciatingly difficult if it takes forever to solve and frustrates you at every step.
When something is excruciating, it's so intense that you desperately want it to stop. A paper cut hurts, but a deep cut that needs stitches causes excruciating pain. Waiting five minutes feels different from the excruciating wait when you're desperate to know if you made the team. The word captures that feeling when discomfort crosses into something much harder to bear.