Roundheadedness is valid Scrabble Word

Is roundheadedness a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is roundheadedness valid Words with Friends?
Words with Friends YES

Definitions for ROUNDHEADEDNESS in dictionary:

Words that contain ROUNDHEADEDNESS

roundheadednesses23

Similar words containing ROUNDHEADEDNES without suffix s

roundheadednesses23
Find what other words can be done using letters: "roundheadedness"
https://scrabble-word.com/finder/roundheadedness
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