Yes, SPORT is a Scrabble word!

Letter values in Scrabble US: S 1, P 3, O 1, R 1, T 1.

Is it a valid word?

SPORT is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

an active diversion requiring physical exertion and competition
the occupation of athletes who compete for pay
(Maine colloquial) a temporary summer resident of Maine
a person known for the way she (or he) behaves when teased or defeated or subjected to trying circumstances
someone who engages in sports
(biology) an organism that has characteristics resulting from chromosomal alteration
verbal wit or mockery (often at another's expense but not to be taken seriously)

SPORT was the Wordle answer on May 27, 2025 (#1,438). Stuck on today’s? Use the Wordle helper.

Also: run around, lark about.

Not playable in Scrabble US: SUMMERCATER.