The word teratogens 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 teratogens
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Seven Letter Word Alert: (45 words)
argents, atoners, earnest, eastern, enrages, entreat, estrone, garnets, garotte, gearset, geostat, gestate, goatees, grantee, greaten, natters, nearest, neatest, negates, negroes, netters, onstage, oranges, rattons, reagent, regents, restage, restate, retaste, retoast, roseate, rosette, rotates, seagoer, senator, snotter, sterane, storage, strange, targets, tentage, tenters, ternate, toaster, treason