| enviable | (adjective) causing envy | - |
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| imperviable | (adjective) not admitting of passage or capable of being affected | Synonyms: impervious |
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| nonviable | (adjective) not capable of living or developing successfully | - |
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| unenviable | (adjective) hard to deal with; especially causing pain or embarrassment | Synonyms: awkward, embarrassing, sticky |
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| (adjective) so undesirable as to be incapable of arousing envy | - |
| viable | (adjective) capable of life or normal growth and development | - |
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| (adjective) capable of being done with means at hand and circumstances as they are | Synonyms: executable, feasible, practicable, workable |