Inextinguishably is valid word

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

Definitions for INEXTINGUISHABLY in dictionary:

Similar words containing EXTINGUISHAB without suffix ly and without prefix in

extinguishable27 inextinguishabl28 inextinguishable29
Find what other words can be done using letters: "inextinguishably"
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