The word photopigments 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: 27
Highest Scoring Words With Friends™ Play In The Letters photopigments
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Seven Letter Word Alert: (75 words)
egotism, egotist, emoting, emotion, ghettos, gnomish, gnomist, gooiest, gothism, gothite, hippest, histone, hogties, homiest, hooping, hooting, hopping, hosting, hotpots, hotspot, iphones, isotope, meshing, mitogen, mittens, moisten, mooting, mopiest, mopping, motions, mottoes, noisome, options, petting, pettish, phonies, photons, pigeons, pigment, pigpens, pimento, pingoes, poohing, pooping, posting, postmen, potions, potpies, potshot, potties, potting, setting, shipmen, shitpot, shoeing, shooing, shopmen, smitten, snippet, sooting, sopping, testing, thiones, tighten, tinpots, tipmost, tiptoes, tiptops, tonight, toonies, tooting, tootsie, topmost, topping, topspin