from
The Collaborative International Dictionary of English v.0.48
Frivolous \Friv"o*lous\, a. [L. frivolus; prob. akin to friare
to rub, crumble, E. friable: cf. F. frivole.]
[1913 Webster]
1. Of little weight or importance; not worth notice; slight;
as, a frivolous argument. --Swift.
[1913 Webster]
2. Given to trifling; marked with unbecoming levity; silly;
interested especially in trifling matters.
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His personal tastes were low and frivolous.
--Macaulay.
Syn: Trifling; trivial; slight; petty; worthless. --
{Friv"o*lous*ly}, adv. -- {Friv"o*lous*ness}, n.
[1913 Webster]