Threepeating is valid Scrabble Word

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

Definitions for THREEPEATING in dictionary:

Words related to THREEPEATING

threepeat14

Similar words containing THREEPEAT without suffix ing

threepeat14 threepeats15 threepeated17
Find what other words can be done using letters: "threepeating"
https://scrabble-word.com/finder/threepeating
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