Guestbook is valid Scrabble Word

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

Definitions for GUESTBOOK in dictionary:

Words related to GUESTBOOK

guestbooks17

Words that contain GUESTBOOK

guestbooks17

How to use GUESTBOOK in a sentence

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