Unselfing is valid Scrabble Word

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

Definitions for UNSELFING in dictionary:

Words related to UNSELFING

unself9
Find what other words can be done using letters: "unselfing"
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