The word forcefulness 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: 24
Highest Scoring Words With Friends™ Play In The Letters forcefulness
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Seven Letter Word Alert: (69 words)
censers, censors, censure, cloners, closers, closure, coffees, coffers, coffles, confers, confess, confuse, consuls, coulees, counsel, courses, creoles, cresols, effuses, enclose, encores, enforce, ensouls, ensures, fencers, fescues, flenser, flenses, flounce, focuser, focuses, forseen, frescos, fucoses, fuelers, furless, necrose, offence, offense, oneself, ourself, reclone, reclose, recluse, recuses, refocus, refuels, refuses, rescues, resoles, ruffles, runoffs, scoffer, screens, scruffs, scuffle, secerns, secures, snuffer, snuffes, snuffle, souffle, sources, sucrose, suffers, sulfone, unclose, uncross, unreels