Superefficiencies is valid Words with Friends

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

Definitions for SUPEREFFICIENCIES in dictionary:

Similar words containing EFFICIENCIE without suffix s and without prefix super

efficiencies22 inefficiencies24
Find what other words can be done using letters: "superefficiencies"
https://scrabble-word.com/finder/superefficiencies
SCRABBLE® is a registered trademark. We do not cooperate with the owners of this trademark. All trademark rights are owned by their owners and are not relevant to the web site "scrabble-word.com". This site is intended for entertainment and training. We try to make a useful tool for all fans of SCRABBLE. "Scrabble Word" is the best method to improve your skills in the game.