Numbskulled is valid Scrabble Word

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

Definitions for NUMBSKULLED in dictionary:

Similar words containing NUMBSKULL without suffix ed

numbskull17 numbskulls18
Find what other words can be done using letters: "numbskulled"
https://scrabble-word.com/finder/numbskulled
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