| impugn | (verb) attack as false or wrong | - |
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| impugnable | (adjective) subject to being discredited | - |
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| inexpugnable | (adjective) incapable of being overcome, challenged or refuted | Synonyms: impregnable |
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| oppugn | (verb) challenge the accuracy, probity, or propriety of | Synonyms: call into question, question |
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| pugnacious | (adjective) ready and able to resort to force or violence | Synonyms: rough |
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| (adjective) tough and callous by virtue of experience | Synonyms: hard-bitten, hard-boiled |
| pugnaciously | (adverb) in a pugnacious manner | - |
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| pugnacity | (noun) a natural disposition to be hostile | Synonyms: aggressiveness, belligerence |
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| repugn | (verb) to make the subject of dispute, contention, or litigation | Synonyms: contend, contest |
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| repugnance | (noun) intense aversion | Synonyms: horror, repulsion, revulsion |
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| (noun) the relation between propositions that cannot both be true at the same time | Synonyms: incompatibility, inconsistency, mutual exclusiveness |
| repugnant | (adjective) offensive to the mind | Synonyms: abhorrent, detestable, obscene, repulsive |
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| smugness | (noun) an excessive feeling of self-satisfaction | - |
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| snugness | (noun) a state of warm snug comfort | Synonyms: cosiness, coziness |
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