Hyponasty is valid Scrabble Word

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

Definitions for HYPONASTY in dictionary:

Words related to HYPONASTY

hyponasties19
Find what other words can be done using letters: "hyponasty"
https://scrabble-word.com/finder/hyponasty
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