Multimillionaires is valid word

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

Definitions for MULTIMILLIONAIRES in dictionary:

Similar words containing MULTIMILLIONAIRE without suffix s

multimillionaire20
Find what other words can be done using letters: "multimillionaires"
https://scrabble-word.com/finder/multimillionaires
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