The word circumnavigating 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 circumnavigating
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Seven Letter Word Alert: (51 words)
actinic, arcanum, arguing, aviatic, canting, carting, carving, circuit, craning, cranium, crating, craving, curtain, curving, gaining, gaiting, gingiva, girning, gracing, grating, griming, guarani, gurning, imaging, ingrain, inuring, martian, martini, migrant, mincing, minivan, minting, nautica, nirvana, raining, ranging, ranting, ringgit, ringing, ringman, ruining, tangram, tinging, tracing, turning, unaging, uniting, vagrant, variant, varmint, vitamin