Is SISTER a valid Scrabble word?

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

What SISTER means

• noun - A daughter of the same parents as another person; a female sibling.
• verb - To strengthen (a supporting beam) by fastening a second beam alongside it.

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

Anagrams of SISTER

• REISTS
• RESIST
• RESITS
• STIRES

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