Thumbier is valid Scrabble Word

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

Definitions for THUMBIER in dictionary:

Words related to THUMBIER

thumby16

Similar words containing THUMBI without suffix er

thumbing16 thumbiest16 bethumbing20 thumbikins21
Find what other words can be done using letters: "thumbier"
https://scrabble-word.com/finder/thumbier
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