Is COSTUME a valid Scrabble word?

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

What COSTUME means

• noun - A style of dress, including garments, accessories and hairstyle, especially as characteristic of a particular country, period or people.
• verb - To dress or adorn with a costume or appropriate garb.

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.