Switchiest is valid Scrabble Word

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

Definitions for SWITCHIEST in dictionary:

Words related to SWITCHIEST

switch14 switchy18
Find what other words can be done using letters: "switchiest"
https://scrabble-word.com/finder/switchiest
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