The word unintrusive 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: 19
Highest Scoring Words With Friends™ Plays In The Letters unintrusive
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Seven Letter Word Alert: (23 words)
interns, inturns, invents, inverts, inviter, invites, nutsier, revisit, revuist, stivier, striven, stunner, sunnier, tinners, tinnier, uniters, unities, unrisen, unrivet, uveitis, vintner, virtues, vitrine