The word cartwheeled 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: 21
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (56 words)
alerted, altered, archlet, catered, charted, cheated, cheater, cheered, chelate, cleared, crawled, created, declare, deerlet, deleter, dewater, earthed, elected, erected, healder, hearted, hectare, latched, leached, leacher, leadeth, leather, leeched, leecher, leeward, reached, reacted, recheat, redealt, reelect, relaced, related, retched, reteach, rewatch, tarweed, teacher, trawled, treacle, treadle, tweedle, watched, watcher, watered, weather, welched, wheedle, wheeled, wheeler, whereat, wreathe