The word teratogenic 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™ Play In The Letters teratogenic
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Seven Letter Word Alert: (57 words)
acetone, aconite, arenite, carting, catogen, cattier, catting, certain, citator, citrate, cittern, coating, cognate, coinage, coreign, cornett, coterie, cottage, crating, enactor, enteric, enticer, entreat, erotica, etaerio, garotte, generic, genetic, granite, grantee, greaten, ingrate, integer, ironage, iterate, nattier, nictate, nitrate, orating, organic, otarine, ratting, reagent, reenact, ricotta, rotting, tangier, tantric, tearing, tentage, tentier, ternate, tetanic, tracing, trainee, treeing, triaene