unserious

comparative more unserious · superlative most unserious

1. Not serious.
   1. approach; style; etc; approach; style; etcCharacterized 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.

      2009 January 9, The New York Times, “Pop and Rock Listings”, in The New York Times, archived from the original on 09 Sep 2018

      2 more examples

      Her tone shift involved former Presidents Barack Obama and Bill Clinton lampooning their fellow ex-president as a figure of ridicule. Then Harris closed the trap with a line in her convention speech: “Trump is an unserious man. But the consequences … of putting Donald Trump back in the White House are extremely serious.”

      2024 August 26, Stephen Collinson, “Trump’s personal attacks aren’t just who he is. They’re his strategy”, in CNN

      In practice, however, the financial barriers to entry are exceptionally steep. Which is not necessarily a bad thing, if only to stop unserious applications from progressing.

      2026 July 22, Richard Wilcock, “Open Access: only possible for the giants?”, in RAIL, number 1066, page 23

      Synonyms: nonserious, facetious, flippant, frivolous

   2. other types of problems; etc; other types of problems; etcNot severe; not grave.

      Synonyms: nonserious, nonsevere