A person who acts frivolously or engages in frivolous behavior; someone lighthearted or not serious.
From 'frivol' plus agent suffix '-er,' creating 'one who frivols.' Emerged in the 17th-18th centuries.
In Jane Austen's time, being called a 'frivoler' was a serious insult, especially for women—it suggested moral weakness, yet modern psychology suggests that play and frivolity are actually essential for creativity and mental health.
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