The word architectural 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: 23
Highest Scoring Words With Friends™ Play In The Letters architectural
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Seven Letter Word Alert: (73 words)
accrual, accruer, achiral, acicula, actuate, alethic, archaic, archeal, archlet, arcuate, article, attache, attirer, auricle, autarch, calcite, caliche, caltech, catarrh, catcher, catechu, cattail, cattier, chalice, charier, charter, chateau, chattel, chatter, circler, circlet, citrate, clatter, clitter, clutter, critter, crucial, curlier, curtail, cuticle, cutrate, erratic, ethical, haircut, lactate, lattice, lurcher, luthier, racecar, railcar, ratchet, ratrace, rattail, rattier, rattler, recatch, rechart, recital, recruit, retract, retrial, ruttier, tactile, tactual, teacart, tertial, titular, trachea, trailer, triarch, turtler, uralite, urethra