The word dissimulations 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: 21
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (63 words)
almonds, amounts, animist, astound, aulists, daltons, diatoms, dimuons, diosmin, dismals, dismiss, distils, domains, dualism, dualist, dustman, idolist, indiums, initial, insists, insults, inuloid, iodisms, islands, lamnoid, liaison, lionism, mastoid, maudlin, militia, misdial, mislaid, missaid, missals, mission, missuit, mistold, mitosis, monilia, moulins, muslins, nudists, outmans, outsail, sadisms, sadists, salmons, simians, sinoids, sodiums, solanum, stadium, stanols, stimuli, studios, sultans, sundial, sustain, talonid, tonsils, tsunami, unlists, unloads