Signable is valid Scrabble Word

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

Definitions for SIGNABLE in dictionary:

Words related to SIGNABLE

sign5

Words that contain SIGNABLE

assignable13 designable14 consignable16 unassignable15
Find what other words can be done using letters: "signable"
https://scrabble-word.com/finder/signable
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