Onomatopoesis is valid Scrabble Word

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

Definitions for ONOMATOPOESIS in dictionary:

Words related to ONOMATOPOESIS

onomatopoeia16 onomatopoeses17
Find what other words can be done using letters: "onomatopoesis"
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