Strikingnesses is valid Scrabble Word

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

Definitions for STRIKINGNESSES in dictionary:

Words related to STRIKINGNESSES

strikingness17
Find what other words can be done using letters: "strikingnesses"
https://scrabble-word.com/finder/strikingnesses
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