The word crocodilians 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 crocodilians
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Seven Letter Word Alert: (42 words)
accords, aclinic, aircool, caldron, calicos, caloric, candors, clarion, clinics, colicin, colonic, concord, condors, conical, conidia, corands, cordial, cordons, coronal, coronas, cricoid, crinoid, donairs, incisor, indoors, inroads, laconic, liaison, nicosia, noloads, nordics, oilcans, onloads, ordains, ordinal, raccoon, racoons, rosalic, scoriac, silicon, sirloin, soricid