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hardened, tempered, treated, toughened | made hard or flexible or resilient especially by heat treatment | |
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hardened, hard-boiled, case-hardened | used of persons; emotionally hardened | |
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hardened, enured, inured | made tough by habitual exposure | |
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hardened | protected against attack (especially by nuclear weapons) | |
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hardened, set | converted to solid form (as concrete) |