Seethingly is valid Scrabble Word

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

Definitions for SEETHINGLY in dictionary:

Words related to SEETHINGLY

seething12

Similar words containing SEETHING without suffix ly

seething12 seethings13
Find what other words can be done using letters: "seethingly"
https://scrabble-word.com/finder/seethingly
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