adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Not serious.; Characterized by a lack of seriousness (e.g., earnestness, commitment).

   "The band's songs, which can be deliciously unserious, are as memorable as they are charming."

2. 2
   Not serious.; Not severe; not grave.

Synonyms

All synonyms

dishonestdisingenuousemptyfacetiousflimsyflippant

Antonyms

All antonyms

solemn

Example

More examples

"Believing in psychoanalysis in 2022 is deeply unserious."

Etymology

From un- + serious.

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