frivolous
[adjective]
Synonyms:
- flippant, childish, foolish, idle, juvenile, puerile, silly, superficial
- trivial, footling (informal), minor, petty, shallow, trifling, unimportant

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Antonyms: serious
Related Words: shallow, superficial, unprofound, gay, light, playful

[TahlilGaran] English Synonym Dictionary ▲

friv‧o‧lous /ˈfrɪvələs/ adjective
[Date: 1400-1500; Language: Latin; Origin: frivolus]

1. not serious or sensible, especially in a way that is not suitable for a particular occasion:
The court discourages frivolous law suits.

2. a frivolous person likes having fun rather than doing serious or sensible things – used to show disapproval Antonym : serious
—frivolously adverb

[TahlilGaran] Dictionary of Contemporary English ▲