Slippiness is valid Scrabble Word

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

Definitions for SLIPPINESS in dictionary:

Words related to SLIPPINESS

slippinesses16 slippy13

Words that contain SLIPPINESS

slippinesses16

Similar words containing SLIPPINES without suffix s

slippinesses16
Find what other words can be done using letters: "slippiness"
https://scrabble-word.com/finder/slippiness
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