The word globetrotters 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: 19
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (48 words)
betters, blotter, boleros, boletes, bolster, bolters, boogers, booster, bootees, booters, bootleg, bottler, bottles, goblets, goobers, grottos, letters, lobster, looters, reblogs, reboost, reboots, rebores, regosol, regrets, reroots, restore, retools, retorts, rooster, rooters, rootlet, roselet, rosette, rotters, setbolt, settler, soberer, teleost, toolers, toolset, tooters, tootler, tootles, totters, trebles, trestle, trotter