The word bacteriophagic 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: 30
Highest Scoring Words With Friends™ Play In The Letters bacteriophagic
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Seven Letter Word Alert: (69 words)
abiotic, abreact, acerbic, acrobat, aerobic, airboat, apogaic, apogeic, apricot, apteria, archaic, atropia, bathcap, bigraph, biochip, biotech, boracic, botcher, brachia, breccia, brioche, cabaret, captcha, cartage, catcher, chaotic, chapter, chariot, choicer, choragi, choregi, cochair, cohabit, cohibit, crochet, ectopia, ectopic, egotrip, erotica, graphic, haircap, haricot, hepatic, iceboat, icteric, itchier, octarch, peatbog, phobiac, picrate, picrite, pitcher, pithier, poacher, portage, potherb, potiche, practic, precoat, probate, rebatch, recatch, repatch, repitch, ribcage, tapioca, toparch, trachea, trophic