The word interiorising 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: 17
Highest Scoring Words With Friends™ Plays In The Letters interiorising
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Seven Letter Word Alert: (47 words)
girners, goiters, goitres, goriest, grinner, grister, igniter, ignites, ignitor, ignores, inosine, inosite, interns, intoner, intones, introns, ioniser, ironers, ironies, ironing, nesting, noisier, norites, orients, origins, regions, reining, renting, resting, ringers, rinsing, rioters, rioting, roister, snoring, snorter, sorting, stinger, stonier, stoning, storing, tensing, tension, tiering, tinners, tinnier, triones