A word for unbearable pain is excruciating.
The reference provided lists "excruciating" as a strong match for describing torturous and painful sensations, essentially defining pain that is difficult or impossible to endure. Other words that describe a similar intensity of pain, though perhaps not quite as directly as "excruciating," are also included in the reference.
Here's a breakdown of words associated with unbearable pain based on the reference:
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Strongest Match:
- Excruciating
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Other Strong Matches: These words also imply a very high degree of pain.
- Acute
- Agonizing
- Exquisite (In some contexts, though generally related to pleasure/beauty, can be used ironically to describe intense pain)
- Grueling
- Harrowing
- Intense
- Searing
- Severe
- Unbearable
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Additional Descriptive Words: These paint a vivid picture of the type of unbearable pain.
- Burning
- Chastening
- Consuming
- Piercing
- Punishing
- Racking
- Rending
- Shooting
- Stabbing
- Tearing
- Tormenting
- Torturing
Therefore, while many words can describe intense pain, "excruciating" is a direct and powerful descriptor of pain that is unbearable.