The word overprinting 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: 23
Highest Scoring Words With Friends™ Play In The Letters overprinting
:
Seven Letter Word Alert: (35 words)
egotrip, environ, eviting, grinner, igniter, ignitor, intoner, inviter, invitro, ironing, nerving, opening, opining, overtip, pivoter, pointer, pontine, porting, printer, protein, proving, reining, renting, repivot, repoint, reprint, rioting, tiering, tinnier, veining, venting, vertigo, vetoing, vintner, vitrine