Word.ws English Dictionary

unserious

unserious adjective: characterized by a lack of seriousness (e.g., earnestness, commitment).

Adjective

unserious (comparative more unserious, superlative most unserious)

  1. (approach, style, etc) 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.2009 January 9, The New York Times, “Pop and Rock Listings”, in The New York Times, archived from the original on 09 Sep 2018
    • 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...2024 August 26, Stephen Collinson, “Trump’s personal attacks aren’t just who he is. They’re his strategy”, in CNN
  2. (other types of problems, etc) Not severe; not grave.

Examples of unserious in a sentence

  • Then Harris closed the trap with a line in her convention speech: “Trump is an unserious man.2024 August 26, Stephen Collinson, “Trump’s personal attacks aren’t just who he is. They’re his strategy”, in CNN:
  • 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 of unserious

All synonyms of unserious

Forms of unserious

comparativemore unserious
superlativemost unserious

Origin of unserious

From un- + serious.

Words formed from unserious

Questions about unserious

What does unserious mean?
Unserious means characterized by a lack of seriousness (e.g., earnestness, commitment).
How do you use unserious in a sentence?
Then Harris closed the trap with a line in her convention speech: “Trump is an unserious man.
What part of speech is unserious?
Unserious is an adjective.

Words near unserious in the dictionary

  1. unserializes
  2. unserializing
  3. unserifed
  4. unseriffed
  5. unseriosity
  6. unserious
  7. unseriously
  8. unseriousness
  9. unserotyped
  10. unserpentine
  11. unserrated

Source and license

Adapted from Wiktionary: unserious (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-unserious.wav.

Cite this entry: “unserious.” Word.ws, https://word.ws/unserious. Based on Wiktionary, CC BY-SA 4.0.