The word effortlessnesses cannot be made in Words With Friends™. It is 16 letters long, too long to fit on a WordsWithFriends board (15 letters max).
Highest Scoring Words With Friends™ Plays In The Letters effortlessnesses
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Seven Letter Word Alert: (45 words)
efforts, entrees, estrone, feelers, festers, fleeter, flenser, flenses, florets, flosses, foresee, forests, forseen, fosters, lessees, lessens, lessons, lessors, nesters, nestles, netless, offense, offsets, oftener, oneself, osselet, ostlers, relents, renests, resents, resoles, roselet, sensors, setoffs, softens, sonless, stenose, stereos, sterols, stoners, tensors, toeless, toffees, tossers, tresses