Runniness is valid Scrabble Word

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

Definitions for RUNNINESS in dictionary:

Words related to RUNNINESS

runninesses11 runny8

Words that contain RUNNINESS

runninesses11

Similar words containing RUNNINES without suffix s

runninesses11
Find what other words can be done using letters: "runniness"
https://scrabble-word.com/finder/runniness
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