| vividness | (noun) chromatic purity: freedom from dilution with white and hence vivid in hue | Synonyms: chroma, intensity, saturation |
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| (noun) interest and variety and intensity | Synonyms: color, colour |
| vivification | (noun) the activity of giving vitality and vigour to something | Synonyms: animation, invigoration |
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| (noun) quality of being active or spirited or alive and vigorous | Synonyms: animation, brio, invigoration, spiritedness |
| vivisection | (noun) the act of operating on living animals (especially in scientific research) | - |
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| vivisectionist | (noun) a biologist who cuts open live animals for research | - |
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