Synoicous is valid Scrabble Word

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

Definitions for SYNOICOUS in dictionary:

Words related to SYNOICOUS

synecious14
Find what other words can be done using letters: "synoicous"
https://scrabble-word.com/finder/synoicous
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