The word staggerers 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: 14
Highest Scoring Words With Friends™ Plays In The Letters staggerers
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Seven Letter Word Alert: (29 words)
aggress, arrests, erasers, garrets, garters, gearset, graters, greaser, greases, greater, rasters, regears, regrate, regress, regrets, reseats, restage, resters, retears, saggers, seaters, serrate, stagers, stagger, starers, taggees, taggers, tearers, teasers