The word phenothiazines 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: 32
Highest Scoring Words With Friends™ Play In The Letters phenothiazines
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Seven Letter Word Alert: (66 words)
anoints, asinine, atheise, atheize, azotise, enzones, ethanes, hatpins, hatshop, haziest, heathen, heptane, heptose, hinnies, histone, inosine, inosite, intense, intones, ionizes, iotizes, iphones, nations, neatens, neonate, onestep, openest, opiates, panties, patines, pennies, pension, pentane, pentose, peonies, phenate, phonies, pianist, piazine, pieties, pinenes, pinions, pinnate, poetise, poetize, pontine, poteens, potheen, saponin, sheathe, spinnet, teashop, tenpins, tension, thiones, tiepins, topazes, zaniest, zaptieh, zeatins, zeniths, zinnias, zionist, zipties, zoisite, zonates