The word agglutinogen 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: 22
Highest Scoring Words With Friends™ Plays In The Letters agglutinogen
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Seven Letter Word Alert: (47 words)
angling, angulon, annulet, antigen, antlion, atoning, elating, elation, eluting, elution, ganging, gaoling, gauging, gelatin, genital, gentian, gigaton, glueing, goaling, gonging, gouging, guanine, gugglet, lagging, leaning, legging, loaning, logging, longing, luggage, lugging, lunging, nagging, nanogel, nonlate, outgain, outline, tagging, tagline, tailgun, tangelo, toenail, tonnage, tugging, unagile, unaging, unalign