Is SERIOUS a valid Scrabble word?

Yes. SERIOUS is valid in Collins Scrabble Words 2024, the word list used for Scrabble in the UK.

What SERIOUS means

• adjective - Without humor or expression of happiness; grave in manner or disposition.
• adverb - seriously, in a serious manner (most often heard in take or mean serious)

Definitions come from Wiktionary via kaikki.org, shortened to fit, and are used under CC BY-SA 4.0.

Gramlet is a daily word game played with the same Collins list. Play today's board.