Extensions is valid Scrabble Word

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

Definitions for EXTENSIONS in dictionary:

Words related to EXTENSIONS

extension16

How to use EXTENSIONS in a sentence

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