Heediest is valid Scrabble Word

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

Definitions for HEEDIEST in dictionary:

Words related to HEEDIEST

heedy12
Find what other words can be done using letters: "heediest"
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