Slippiest is valid Scrabble Word

Is slippiest a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is slippiest valid Words with Friends?
Words with Friends YES

Definitions for SLIPPIEST in dictionary:

Words related to SLIPPIEST

slippier12 slippy13
Find what other words can be done using letters: "slippiest"
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