Cluster is valid Scrabble Word

Is cluster a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is cluster valid Words with Friends?
Words with Friends YES

Definitions for CLUSTER in dictionary:

Words related to CLUSTER

clustered12 clustering13 clusteringly18 clusters10 clustery13

How to use CLUSTER in a sentence

Find what other words can be done using letters: "cluster"
https://scrabble-word.com/finder/cluster
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