The word reinstalls 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: 13
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (60 words)
airless, antlers, antsier, artless, elastin, enlists, entails, illness, inserts, install, instars, latrine, lentils, lintels, listens, literal, nailers, nailset, nastier, rallies, ratline, realist, reliant, relists, renails, rentals, resails, reslant, restain, retails, retains, retills, retinal, retinas, rillets, sailers, salient, salines, saltern, saltier, satires, seitans, serials, sestina, silanes, silents, sinters, slaters, slatier, stainer, stellar, sternal, stiller, strains, tallier, tallies, tillers, tinsels, trellis, trenail