
Impossible
Literal Impossibility
Used to state something cannot happen due to laws of nature or limitations.

Flying unaided like a bird is impossible for humans.
Hyperbolic Expression
Often used to emphasize the difficulty of a task, not always literal.

Climbing that mountain in a day seems impossible.
Emphasize Futility
Indicates that effort will not change the outcome, suggesting giving up.

Arguing with him is impossible; he never listens.
Compare with
ChallengeFutileHopelessImpracticalInsurmountablePreposterousRealisticUnattainable
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