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verb
cause to accept or become hardened to; habituate
"He was inured to the cold"
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hardy
having rugged physical strength; inured to fatigue or hardships
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sturdy
having rugged physical strength; inured to fatigue or hardships
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stout
having rugged physical strength; inured to fatigue or hardships
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stalwart
having rugged physical strength; inured to fatigue or hardships