The word reproducers 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: (39 words)
coursed, courser, deposer, orderer, perused, pourers, precode, proceed, procure, produce, prouder, recodes, records, recoups, recured, recures, recurse, recused, reducer, reduces, reorder, reposed, reposer, repours, rescope, rescore, rescued, rescuer, scoured, scourer, secured, securer, seducer, sourced, spruced, sprucer, spurred, spurrer, supered