Soundproofings is valid Scrabble Word

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

Definitions for SOUNDPROOFINGS in dictionary:

Words related to SOUNDPROOFINGS

soundproofing20

Similar words containing SOUNDPROOFING without suffix s

soundproofing20
Find what other words can be done using letters: "soundproofings"
https://scrabble-word.com/finder/soundproofings
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