The word enterokinase 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: 18
Highest Scoring Words With Friends™ Play In The Letters enterokinase
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Seven Letter Word Alert: (73 words)
aeriest, anoints, antsier, arenite, atoners, earnest, eastern, eeriest, ensnare, entrain, entrees, entries, erotise, estrone, etaerio, insaner, intakes, intense, interns, intoner, intones, introns, karites, keenest, keratin, kernite, ketones, nastier, nations, nearest, neatens, nektons, neonate, nitrene, nonarts, norites, orients, otarine, rankest, rations, reknits, reknots, rennets, restain, restake, restoke, retains, retaken, retakes, retinas, roseate, senator, seriate, skinner, snakier, sneaker, stainer, sterane, stinker, stonier, tankers, tanners, teenier, tenners, tension, tinkers, tinners, trainee, treason, triaene, trienes, triones, troikas