Her frivolity during the solemn ceremony drew disapproving glances.

She set aside her frivolities to focus on the charity project that needed real attention.

Her notebook was filled with frivols, small, half-formed ideas and sketches she never intended to pursue.

Despite his serious responsibilities, he was often dismissed as a frivoler by his colleagues.

Her constant frivolousity during meetings frustrated her colleagues, who preferred a more serious approach.