Jointness is valid Scrabble Word

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

Definitions for JOINTNESS in dictionary:

Words related to JOINTNESS

joint12

Words that contain JOINTNESS

jointnesses18

Similar words containing JOINTNES without suffix s

jointnesses18
Find what other words can be done using letters: "jointness"
https://scrabble-word.com/finder/jointness
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