The word primitiveness 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: 24
Highest Scoring Words With Friends™ Play In The Letters primitiveness
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Seven Letter Word Alert: (95 words)
empires, empress, emptier, empties, entries, enviers, epimers, impress, imprint, inepter, inserts, inspire, insteps, interim, inverse, inverts, invests, invitee, inviter, invites, itemise, messier, metrise, minters, mintier, mispens, misstep, misters, mistier, nemesis, nesters, penises, pensive, permits, persist, pesters, pieties, pietism, pissier, pitiers, premise, premiss, present, presets, prevent, priests, pterins, reemits, remines, remints, renests, repents, repines, resents, respins, respite, restems, resteps, restive, retimes, revises, revisit, seitens, serpent, sestine, siemens, sievert, simpers, sinters, smiters, snipers, spinets, spinier, spirits, spriest, sprints, sprites, stimies, stivers, stivier, stripes, striven, strives, tempers, termini, terpine, tiepins, tipsier, trienes, veinier, verisms, verists, versine, vespers, vitrine