The word delimitates 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: 16
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (47 words)
aediles, dailies, deities, delates, delimes, delimit, deltate, demates, deslime, details, dieties, dietist, dilates, ditties, elitism, elitist, emailed, emitted, imitate, itemise, itemset, latites, liaised, limeade, limited, mediate, metaled, mettled, mettles, mildest, misdate, misdeal, misdial, misedit, mislaid, mislead, mitiest, settled, sidelit, slatted, slitted, smelted, steamed, stilted, stimied, teatime, tidiest