Unbeginning is valid Scrabble Word

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

Definitions for UNBEGINNING in dictionary:

Similar words containing BEGINN without suffix ing and without prefix un

beginne10 beginner11 beginnes11 beginners12 beginning13 beginnings14 rebeginning15 misbeginning18 rebeginnings16 beginningless17
Find what other words can be done using letters: "unbeginning"
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