Scrabble Dictionary

Check if your word is playable in Scrabble.

Yes, tennis is playable

...and is worth 8 points.

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Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Tennis" Definition

noun

A game played with rackets and a light ball by two players or two pairs of players on a rectangular court, as of grass, clay, or asphalt, divided by a net. Also called lawn tennis.
Court tennis.
An indoor or outdoor game that is played with rackets and a light elastic ball by two players or pairs of players on a level court (as of clay or grass) divided by a low net.