The word greatcoats 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: 15
Highest Scoring Words With Friends™ Play In The Letters greatcoats
:
Seven Letter Word Alert: (23 words)
acaters, agarose, cargoes, cartage, coaster, corsage, costate, cottage, cotters, eartags, garotte, geostat, recoats, regatta, retoast, rosacea, rotates, scatter, storage, targets, teacart, teargas, toaster