Stairstep is valid Scrabble Word

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

Definitions for STAIRSTEP in dictionary:

Words related to STAIRSTEP

stairstepped17 stairstepping18 stairsteps12

Words that contain STAIRSTEP

stairsteps12 stairstepped17 stairstepping18
Find what other words can be done using letters: "stairstep"
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