Seignoral is valid Scrabble Word

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

Definitions for SEIGNORAL in dictionary:

Similar words containing SEIGNOR without suffix al

seignory12 seignorage12 seignorial11 seignories11 seignorages13
Find what other words can be done using letters: "seignoral"
https://scrabble-word.com/finder/seignoral
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