FRIV'OLOUS, adjective [Latin frivlus, from the root of frio, to break into small pieces, to crumble; tero, trivi, to rub or wear out.] Slight; trifling; trivial; of little weight, worth or importance; not worth notice; as a frivolous argument; a frivolous objection or pretext.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI