The word architects 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: 18
Highest Scoring Words With Friends™ Play In The Letters architects
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Seven Letter Word Alert: (41 words)
accites, achiest, aitches, arctics, artiest, ascetic, atheist, attires, cachers, cachets, cashier, catcher, catches, cattier, chaster, chatter, cithers, citrate, cristae, hastier, hatters, hitters, iratest, raciest, ratchet, rattish, recatch, richest, scatter, scratch, shatter, statice, stretch, striate, tactics, tartish, tastier, threats, tictacs, tithers, trisect