Sibship is valid Scrabble Word

Is sibship a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is sibship valid Words with Friends?
Words with Friends YES

Definitions for SIBSHIP in dictionary:

Words related to SIBSHIP

sibships15

Words that contain SIBSHIP

sibships15
Find what other words can be done using letters: "sibship"
https://scrabble-word.com/finder/sibship
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