Customisable is valid Scrabble Word

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

Definitions for CUSTOMISABLE in dictionary:

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