Yes, posts is in the scrabble dictionary

...and is worth 8 points by itself.

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Posts Definition

noun

Plural form of post.
from the English-language Wiktionary

verb

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

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Top Words by points

Points

posts

7

2 letter words with POSTS

Points

os

2

to

2

so

2

po

4

op

4

3 letter words with POSTS

Points

opt

5

top

5

sot

3

sos

3

sop

5

ops

5

pst

5

pot

5

pos

5

4 letter words with POSTS

Points

psst

6

pots

6

post

6

sops

6

sots

4

spot

6

stop

6

opts

6

tops

6

toss

4

5 letter words with POSTS

Points

posts

7

spots

7

stops

7

Found 27 words in 0.13149 seconds