Umbonation is valid Scrabble Word

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

Definitions for UMBONATION in dictionary:

Words related to UMBONATION

umbonations15

Words that contain UMBONATION

umbonations15

Similar words containing UMBONA without suffix tion

umbonal11 umbonate12 umbonations15
Find what other words can be done using letters: "umbonation"
https://scrabble-word.com/finder/umbonation
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