Stockishnesses is valid Scrabble Word

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

Definitions for STOCKISHNESSES in dictionary:

Words related to STOCKISHNESSES

stockishness21
Find what other words can be done using letters: "stockishnesses"
https://scrabble-word.com/finder/stockishnesses
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