Is THIRTY a valid Scrabble word?

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

What THIRTY means

• numeral - The cardinal number occurring after twenty-nine and before thirty-one, represented in Arabic numerals as 30.
• noun - A rack of thirty beers.

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.