unfrivolous

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adjective un·friv·o·lous \ˌən-ˈfri-və-ləs\

Definition of unfrivolous

  1. :  not frivolous :  having real seriousness or importance an unfrivolous objection the unfrivolous matter of the national budget

First Known Use of unfrivolous

1840


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to fight against or to call in question

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