The word remaindered 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: (31 words)
admired, admirer, amended, amender, dandier, deadmen, deaired, derider, dernier, drained, drainer, dreader, dreamed, dreamer, emended, emender, mariner, married, meander, needier, nerdier, randier, readied, readier, reamend, rearmed, redream, redried, reedier, remined, renamed