The word modernist 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: 14
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (34 words)
editors, endmost, indorse, mentors, meronts, minders, mindset, minters, misdoer, misdone, moderns, moisten, moister, monster, mordent, mortise, nimrods, norites, orients, reminds, remints, rodents, roisted, rosined, snorted, sortied, steroid, stonier, storied, stormed, tierods, tinders, tridems, triones