The word underspending 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 underspending
:
Seven Letter Word Alert: (82 words)
deeding, dengues, deniers, denning, denuder, denudes, depends, depside, derides, desired, dinners, dispend, dredges, dresden, drudges, endings, endured, endures, engined, engines, ensuing, ensured, genders, genuine, greisen, grinded, grinned, gunners, insured, needing, nursing, peering, pending, penguin, penners, pennies, penning, perused, pinenes, pingers, preside, pruning, pudding, pudgier, punners, punnier, punning, purines, pursing, reddens, reguide, reigned, rending, rennins, repined, repines, resided, residue, reusing, ripened, ruddies, running, sedgier, seeding, seeping, sending, snudged, spender, spinner, spurned, sunnier, sunning, supered, undined, undines, undried, unedged, unended, unipeds, unrisen, upended, uprisen