Yes, tas is in the scrabble dictionary

...and is worth 3 points by itself.

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Tas Definition

noun

Alternative spelling of tass.
from the English-language Wiktionary

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Top Words by points

Points

ats

3

2 letter words with TAS

Points

as

2

at

2

ta

2

3 letter words with TAS

Points

ats

3

sat

3

tas

3

Found 6 words in 0.09916 seconds