The word refurnishing 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: 22
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (48 words)
ensuing, figurer, figures, fingers, finings, firings, firring, fishier, fishing, fringer, fringes, fuhrers, funnier, funnies, furnish, furries, furring, girners, grinner, gunfire, gunners, gurners, gushier, herring, hinnies, hungers, hurries, infuser, insurer, inuring, nursing, reining, reusing, ringers, rinsing, ruining, runners, runnier, rushing, shinier, shining, shunner, sunnier, surfing, unhinge, unifier, unifies, unrisen