The word mountaineer 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 mountaineer
:
Seven Letter Word Alert: (50 words)
anemone, arenite, arenium, eminent, emirate, enamine, enamour, entrain, etaerio, intoner, ironman, matinee, meatier, mention, minaret, minuter, montane, moraine, mounter, mountie, muriate, neonate, neuroma, neutron, nitrene, nominee, nonamer, nonmate, nonmeat, nonmute, onetime, otarine, outearn, raiment, rainout, remnant, remount, reunion, reunite, romaine, routine, runtime, tonearm, trainee, triaene, unearnt, uneaten, unmeant, urinate, uterine