Unclassifiable is valid Scrabble Word

Is unclassifiable a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is unclassifiable valid Words with Friends?
Words with Friends YES

Definitions for UNCLASSIFIABLE in dictionary:

How to use UNCLASSIFIABLE in a sentence

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