Yes, bests is in the scrabble dictionary

...and is worth 8 points by itself.

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Bests Definition

noun

Plural form of best.
from the English-language Wiktionary

verb

Third-person singular simple present indicative form of best.
from the English-language Wiktionary

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Top Words by points

Points

bests

7

2 letter words with BESTS

Points

be

4

es

2

et

2

te

2

3 letter words with BESTS

Points

bes

5

bet

5

ess

3

est

3

set

3

tes

3

4 letter words with BESTS

Points

best

6

bets

6

ests

4

sets

4

5 letter words with BESTS

Points

bests

7

Found 15 words in 0.17226 seconds