The word respirators 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: 14
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (74 words)
airport, arrests, artsier, aspirer, aspires, opiates, paresis, parrots, parsers, parties, pasters, pastier, pasties, pastors, persist, pirates, porters, posters, praetor, praiser, praises, praters, presort, priests, prorate, raisers, rapists, raptors, raspers, raspier, rasters, repairs, repasts, reports, reposts, reroast, resorps, resorts, respots, restirs, restrap, retraps, rioters, roarers, roaster, roister, ropiest, rosiest, rosters, satires, seaport, sierras, soapers, soapier, soarers, sorrier, sorters, sorties, sparers, sparest, sparser, spireas, spriest, sprites, starers, stirrer, stories, striper, stripes, tarrier, tarries, terroir, terrors, traipse