The word disturbers 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: 15
Highest Scoring Words With Friends™ Play In The Letters disturbers
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Seven Letter Word Alert: (33 words)
bedirts, bedsits, bedusts, bestrid, bestuds, birders, bruised, bruiser, bruises, busiest, busters, bustier, deburrs, disturb, dusters, dustier, reburst, restirs, rudites, rustier, stirred, strider, strides, studier, studies, subedit, subside, subsite, sudsier, suiters, tissued, trussed, turrids