The word nitrogenise 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 nitrogenise
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Seven Letter Word Alert: (53 words)
engines, entries, erotise, estrone, goiters, goitres, goriest, greisen, igniter, ignites, ignitor, ignores, inosine, inosite, integer, intense, interns, intoner, intones, introns, ioniser, ironies, ironing, negroes, nesting, nitrene, noisier, norites, orients, origins, regents, regions, reining, rennets, renting, resting, rinsing, rioting, snoring, sorting, stinger, stonier, stoning, storing, tenners, tensing, tension, tiering, tinners, tinnier, treeing, trienes, triones