The word imperfectives 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: 29
Highest Scoring Words With Friends™ Play In The Letters imperfectives
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Seven Letter Word Alert: (65 words)
eeriest, emetics, empires, empiric, emptier, empties, epimers, evictee, festive, fictive, firepit, firmest, itemise, meeters, mercies, metrics, metrise, miscite, misfire, mistier, peevers, perfect, permits, picrite, pierces, pieties, pietism, pitiers, precise, preemie, prefect, premeet, premise, presift, receipt, receive, recipes, recites, reemits, refects, reifies, remeets, respect, respice, respite, restive, retimes, revisit, scepter, sceptre, secrete, seepier, service, sievert, specter, spectre, spermic, spicier, steeper, stivier, teemers, tempers, tipsier, triceps, victims