The word experimenters 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 experimenters
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Seven Letter Word Alert: (80 words)
eeriest, empires, emptier, empties, enemies, enterer, entrees, entries, epimers, exempts, expense, experts, expirer, expires, extirps, extreme, inepter, inerter, meeters, metrise, minters, miterer, permits, preemie, preener, premeet, premier, premise, premixt, present, preteen, preterm, primers, printer, pterins, reemits, reenter, reinter, remeets, remines, remints, remixer, remixes, renters, repents, repiner, repines, reprime, reprint, reprise, rerents, rerinse, respire, respite, retimer, retimes, retiree, retires, retrees, retries, retrims, seepier, serener, serpent, sixteen, sneerer, steepen, steeper, steerer, sterner, striper, teemers, teenier, teepees, tempers, terpene, terpine, trienes, trimers, trireme