The word incoherently 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
Seven Letter Word Alert: (40 words)
cheerio, cheerly, chlorin, choline, chortle, cithern, cornily, coterie, echelon, elector, enocyte, enteric, enticer, erectly, etheric, heretic, heroine, hotline, inertly, inocyte, intoner, lechery, lectern, lection, lenient, lyncher, neither, neocyte, ninthly, nitrene, notcher, onliner, recline, reclone, retinol, therein, thereon, thinner, tinhorn, trochee