Backwardations is valid Scrabble Word

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

Definitions for BACKWARDATIONS in dictionary:

Words related to BACKWARDATIONS

backwardation25

Similar words containing BACKWARDATION without suffix s

backwardation25
Find what other words can be done using letters: "backwardations"
https://scrabble-word.com/finder/backwardations
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