The word reintroduce 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
Seven Letter Word Alert: (59 words)
centred, codeine, conduit, cornier, coterie, counted, counter, courier, courted, crunode, current, curried, decrier, denture, dernier, detinue, detuner, eductor, encoder, encored, enteric, enticed, enticer, erector, eructed, erudite, eudicot, inducer, inerter, intrude, ioduret, nerdier, noticed, outride, recited, reciter, recount, recruit, recured, reducer, reincur, reinter, reroute, retired, retried, retuned, reunite, rounder, routine, runtier, tenured, tireder, trounce, uncited, uncored, unerect, untired, untried, uterine