The word passionateness 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: 19
Highest Scoring Words With Friends™ Play In The Letters passionateness
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Seven Letter Word Alert: (68 words)
anapest, anoints, aptness, asepses, asepsis, assents, assists, atonias, easiest, insteps, intense, intones, nations, neatens, neonate, noseans, nosiest, oneness, onestep, openest, opiates, osseins, pansies, panties, passion, pasties, patinae, patinas, patines, peasant, penises, pennies, pension, pentane, pentose, peonies, pinenes, pinnate, pistons, poesies, poetess, poetise, pontine, possess, possets, poteens, saponin, sateens, seasons, seitans, seitens, senates, sensate, session, sestina, sestine, siennas, siestas, sonatas, sonnets, spinets, spinnet, spinons, spinose, stenose, stepson, tenpins, tension