| adulterant | (adjective) making impure or corrupt by adding extraneous materials | Synonyms: adulterating |
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| adulterate | (adjective) mixed with impurities | Synonyms: adulterated, debased |
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| adulterated | (adjective) mixed with impurities | Synonyms: adulterate, debased |
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| adulterating | (adjective) making impure or corrupt by adding extraneous materials | Synonyms: adulterant |
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| adulterine | (adjective) conceived in adultery | - |
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| adulterous | (adjective) characterized by adultery | Synonyms: extracurricular, extramarital |
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| (adjective) not faithful to a spouse or lover | Synonyms: cheating, two-timing |
| ulterior | (adjective) lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed) | Synonyms: subterranean, subterraneous |
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| (adjective) beyond or outside an area of immediate interest; remote | - |
| (adjective) coming at a subsequent time or stage | Synonyms: later, posterior |
| unadulterated | (adjective) not mixed with impurities | - |
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| (adjective) without qualification; used informally as (often pejorative) intensifiers | Synonyms: arrant, complete, consummate, double-dyed, everlasting, gross, perfect, pure, sodding, staring, stark, thorough, thoroughgoing, utter |
| vaulted | (adjective) having a hemispherical vault or dome | Synonyms: domed |
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