| toughen | (verb) make tough or tougher | - |
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| toughened | (adjective) physically toughened | Synonyms: tough |
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| (adjective) made hard or flexible or resilient especially by heat treatment | Synonyms: hardened, tempered, treated |
| unapprehensive | (adjective) not recognizing or slow to recognize danger | - |
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| unauthentic | (adjective) false or fake; not what it appears to be | Synonyms: inauthentic, spurious |
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| uncomprehended | (adjective) not fully understood | - |
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| uncomprehending | (adjective) lacking understanding | - |
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| uncomprehensible | (adjective) difficult to understand | Synonyms: incomprehensible |
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| untoughened | (adjective) physically untoughened | Synonyms: tender |
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| whence | (adverb) from what place, source, or cause | - |
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| writhen | (adjective) twisted (especially as in pain or struggle) | Synonyms: contorted, writhed |
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