The word trapshooter 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: 16
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (62 words)
earshot, hapters, harpers, hatters, hoarser, hotpots, hotspot, orators, parrots, patters, phraser, poorest, porters, pothers, potshot, potters, praetor, praters, presort, prorate, protest, raptors, ratters, reports, reroast, reroots, reshoot, restart, restrap, retoast, retorts, retraps, rhetors, roaster, rooster, rooters, rotates, rotator, rotters, seaport, sharper, shatter, shooter, shorter, soother, spatter, spotter, starter, stooper, strophe, taproot, tapster, teapots, teashop, tephras, threats, throats, toaster, tooters, torpors, trasher, trooper