Serious

//ˈsɪə̯.ɹi.əs//

Antonyms for "serious" (15 found)

game grave play

Adjective(11 words)

carefree coltish flimsy flippant gaudy jesting jocular ridiculous trifling unimportant witty

Adjective(1 words)

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.