Irreducibleness is valid Scrabble Word

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

Definitions for IRREDUCIBLENESS in dictionary:

Similar words containing REDUCIBLENES without suffix s and without prefix ir

reducibleness18 reduciblenesses20
Find what other words can be done using letters: "irreducibleness"
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