Supermax is valid Scrabble Word

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

Definitions for SUPERMAX in dictionary:

Words related to SUPERMAX

supermaxes21

Words that contain SUPERMAX

supermaxes21
Find what other words can be done using letters: "supermax"
https://scrabble-word.com/finder/supermax
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