Counterinstances is valid word

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

Definitions for COUNTERINSTANCES in dictionary:

Similar words containing UNTERINSTANCE without suffix s and without prefix co

counterinstance19
Find what other words can be done using letters: "counterinstances"
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