The word parentless 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: 15
Highest Scoring Words With Friends™ Play In The Letters parentless
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Seven Letter Word Alert: (95 words)
alpeens, antlers, aptness, artless, asperse, earless, earnest, eastern, elapses, elaters, enseals, ensears, enteral, entraps, eternal, lateens, leaners, leanest, leapers, leasers, napless, nearest, nesters, nestles, netless, palters, panters, parents, pastels, pasters, pelters, pesters, pestles, petless, petrels, planers, planets, planter, plaster, platers, pleaser, pleases, prelate, presale, present, presets, pretans, realest, relapse, relates, relents, renests, rentals, repanel, repaste, repasts, repeals, repeats, repents, replane, replans, replant, replate, repleat, resales, reseals, reseats, resents, reslant, resnaps, respans, respelt, resteps, retapes, saltern, sateens, sealers, seaters, senates, sensate, serapes, serpent, slaters, sparest, spelean, spleens, stapler, staples, stealer, sterane, sternal, tealess, teasels, teasers, trepans