The word gesticulate 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (38 words)
acutest, aiglets, augites, auletes, cagiest, castile, cultist, cutlets, eaglets, elastic, elegaic, elegiac, elegist, elegits, eluates, estuate, euclase, galette, gelates, gestalt, gestate, gluiest, laciest, latites, lattice, leagues, legates, lettuce, leucite, ligates, lucites, lutites, scuttle, situate, statice, sulcate, tactile, ugliest