The word unsympathising 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 unsympathising
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Seven Letter Word Alert: (88 words)
amusing, anguish, animist, annuity, gunship, gymnast, gypsums, hangups, hassium, hatpins, hinting, hissing, hunting, husting, hymning, hymnist, impugns, inhuman, insight, issuing, isthmus, manhunt, mannish, mashing, mashups, massing, matings, minting, mishaps, mispays, misship, missing, missuit, misting, mushing, musings, mustang, naughty, paining, panting, passing, pasting, pausing, phasing, pianist, pithing, pitying, punting, pushing, sashing, sayings, shaming, shaping, shining, shipman, shutins, simians, smashup, smiting, sniping, spaying, spiting, spuming, stannum, staying, stigmas, stuping, stygian, suiting, sunhats, suntans, sustain, syntagm, syntans, tamping, tapings, thiamin, timings, timpani, tsunami, tunings, tympani, uniting, unsmash, unsnaps, unstain, untying, yauping