The word congratulating 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: 25
Highest Scoring Words With Friends™ Plays In The Letters congratulating
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Seven Letter Word Alert: (94 words)
alicant, anginal, angling, angular, angulon, annular, antlion, arguing, atoning, auction, autocar, cannoli, cannula, canting, canular, carinal, carting, catalog, cattail, catting, caution, cingula, citator, clangor, clarion, cloning, coaling, coaltar, coating, contain, corning, cranial, craning, crating, curling, curtail, curtain, cutting, ganglia, gaoling, gigaton, glaring, gluonic, glutton, goaling, gracing, granola, grating, guarani, gurning, gutting, lancing, languor, loaning, longing, longrun, lunaria, lunatic, lunging, natural, nautica, nonliar, nutting, orating, organic, outgain, outgrin, outrant, rainout, ranging, ranting, rattail, ratting, ricotta, roaning, roguing, rotting, routing, rutting, tactual, tailgun, tantric, tauting, titular, touring, touting, tracing, truncal, turning, unaging, unalign, uncling, unction, unicorn