| frivol | (verb) act frivolously | Synonyms: trifle |
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| frivolity | (noun) acting like a clown or buffoon | Synonyms: buffoonery, clowning, harlequinade, japery, prank |
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| (noun) something of little value or significance | Synonyms: bagatelle, fluff, frippery |
| (noun) the trait of being frivolous; not serious or sensible | Synonyms: frivolousness |
| frivolous | (adjective) not serious in content or attitude or behavior | - |
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| frivolously | (adverb) in a frivolous manner | - |
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| frivolousness | (noun) the trait of being frivolous; not serious or sensible | Synonyms: frivolity |
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| millivolt | (noun) a unit of potential equal to one thousandth of a volt | Synonyms: mV |
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| millivoltmeter | (noun) sensitive voltmeter that can measure voltage in millivolts | - |
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