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| Roget’s II: The New Thesaurus, Third Edition. 1995. |
toughen |
| VERB: | 1. To make resistant to hardship, especially through continued exposure: acclimate, acclimatize, caseharden, harden, indurate, season. See CONTINUE, RESIST. 2. To become or cause to become tough or strong: strengthen. See STRONG. |
| Roget’s II: The New Thesaurus, Third Edition. Copyright © 1995 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. | |
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