| turbulence | (noun) unstable flow of a liquid or gas | Synonyms: turbulency |
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| (noun) a state of violent disturbance and disorder (as in politics or social conditions generally) | Synonyms: Sturm und Drang, upheaval |
| (noun) instability in the atmosphere | - |
| twopence | (noun) a former United Kingdom silver coin; United Kingdom bronze decimal coin worth two pennies | Synonyms: tuppence |
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| unbalance | (noun) a lack of balance or state of disequilibrium | Synonyms: imbalance, instability |
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| (noun) a state of mental disturbance and disorientation | Synonyms: derangement, mental unsoundness |
| unimportance | (noun) the quality of not being important or worthy of note | - |
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| (noun) the state of being humble and unimportant | Synonyms: humbleness, lowliness, obscureness |
| usance | (noun) accepted or habitual practice | Synonyms: custom, usage |
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| (noun) (economics) the utilization of economic goods to satisfy needs or in manufacturing | Synonyms: consumption, economic consumption, use, use of goods and services |
| (noun) the period of time permitted by commercial usage for the payment of a bill of exchange (especially a foreign bill of exchange) | - |
| utterance | (noun) the use of uttered sounds for auditory communication | Synonyms: vocalization |
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| valance | (noun) a decorative framework to conceal curtain fixtures at the top of a window casing | Synonyms: cornice, pelmet, valance board |
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| valence | (noun) (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent) | Synonyms: valency |
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| (noun) (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate | Synonyms: valency |
| valiance | (noun) the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle) | Synonyms: gallantry, heroism, valiancy, valor, valorousness, valour |
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| variance | (noun) an activity that varies from a norm or standard | Synonyms: variation |
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| (noun) an official dispensation to act contrary to a rule or regulation (typically a building regulation) | - |
| (noun) a difference between conflicting facts or claims or opinions | Synonyms: disagreement, discrepancy, divergence |
| (noun) the quality of being subject to variation | Synonyms: variability, variableness |
| (noun) the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value | - |
| (noun) discord that splits a group | Synonyms: division |
| (noun) an event that departs from expectations | Synonyms: discrepancy, variant |
| vehemence | (noun) the property of being wild or turbulent | Synonyms: ferocity, fierceness, furiousness, fury, violence, wildness |
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| (noun) intensity or forcefulness of expression | Synonyms: emphasis |
| vengeance | (noun) the act of taking revenge (harming someone in retaliation for something harmful that they have done) especially in the next life | Synonyms: payback, retribution |
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| vigilance | (noun) vigilant attentiveness | Synonyms: watchfulness, weather eye |
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| (noun) the process of paying close and continuous attention | Synonyms: alertness, wakefulness, watchfulness |
| violence | (noun) an act of aggression (as one against a person who resists) | Synonyms: force |
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| (noun) the property of being wild or turbulent | Synonyms: ferocity, fierceness, furiousness, fury, vehemence, wildness |
| (noun) a turbulent state resulting in injuries and destruction etc. | - |
| virulence | (noun) extreme harmfulness (as the capacity of a microorganism to cause disease) | Synonyms: virulency |
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| (noun) extreme hostility | Synonyms: virulency |
| voidance | (noun) the act of removing the contents of something | Synonyms: emptying, evacuation |
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| wince | (noun) a reflex response to sudden pain | Synonyms: flinch |
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| (noun) the facial expression of sudden pain | - |