Filibusterisms is valid Scrabble Word

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

Definitions for FILIBUSTERISMS in dictionary:

Words related to FILIBUSTERISMS

filibuster15

Similar words containing FILIBUSTERISM without suffix s

filibusterism20
Find what other words can be done using letters: "filibusterisms"
https://scrabble-word.com/finder/filibusterisms
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