The word gatecrashers 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™ Play In The Letters
Seven Letter Word Alert: (95 words)
acaters, acerate, acreage, actress, aerates, archers, arrests, careers, cartage, carters, caseate, cashers, casters, catarrh, caterer, cerates, charger, charges, charter, chasers, chaster, cheater, crasher, crashes, crasser, craters, creaser, creases, creates, cresset, earache, eartags, erasers, etchers, garrets, garters, gashers, gathers, gearset, graters, greaser, greases, greater, hearers, hearses, heaters, hectare, hetaera, rashers, rashest, rasters, ratrace, reacher, reaches, recasts, rechart, recheat, recrate, regears, regrate, regress, regrets, rehears, reheats, reseats, resects, reshare, restage, resters, retches, reteach, retears, retrace, sachets, scarers, scathes, searats, seastar, seaters, secrets, serrate, sharers, shearer, stagers, starers, teacher, teaches, tearers, teargas, teasers, terrace, tracers, trachea, trasher, trashes