The word superfluity is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 22
Highest Scoring Words With Friends™ Play In The Letters superfluity
:
Seven Letter Word Alert: (35 words)
filters, firstly, fistule, fluster, fluters, futiley, futures, lifters, lustier, petrify, pilfers, presift, purfles, pursuit, pustule, putrefy, pyrites, reflips, resplit, restful, rustily, rutiles, stifler, stipule, stripey, stupefy, stupify, stylier, sulfite, sulfury, surfeit, sutlery, trifles, triples, uplifts