| feverroot | (noun) coarse weedy American perennial herb with large usually perfoliate leaves and purple or dull red flowers | Synonyms: horse gentian, tinker's root, Triostium perfoliatum, wild coffee |
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| overrating | (noun) a calculation that results in an estimate that is too high | Synonyms: overestimate, overestimation, overreckoning |
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| overreaction | (noun) an excessive reaction; a reaction with inappropriate emotional behavior | - |
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| overreckoning | (noun) a calculation that results in an estimate that is too high | Synonyms: overestimate, overestimation, overrating |
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| overrefinement | (noun) the act of distorting something so it seems to mean something it was not intended to mean | Synonyms: distortion, straining, torture, twisting |
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| override | (noun) the act of nullifying; making null and void; counteracting or overriding the effect or force of something | Synonyms: nullification |
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| (noun) a manually operated device to correct the operation of an automatic device | - |
| overrun | (noun) too much production or more than expected | Synonyms: overproduction |
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| silverrod | (noun) plant of eastern North America having creamy white flowers | Synonyms: Solidago bicolor |
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| verruca | (noun) (pathology) a firm abnormal elevated blemish on the skin; caused by a virus | Synonyms: wart |
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| viverrine | (noun) small cat-like predatory mammals of warmer parts of the Old World | Synonyms: viverrine mammal |
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