The word resourceless 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: 17
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (37 words)
closers, closure, coulees, courser, courses, creoles, cresols, cresses, crosser, crosses, crueler, curlers, cursers, cursors, cussers, lessees, lessors, reclose, recluse, recross, recures, recurls, recurse, recuses, reelers, rescore, rescuer, rescues, resoles, scorers, scourer, securer, secures, sorrels, sources, sucrose, useless