The word ipsilateral 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: 16
Highest Scoring Words With Friends™ Play In The Letters ipsilateral
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Seven Letter Word Alert: (53 words)
aerials, airiest, allstar, aplites, apteria, atresia, illites, irisate, lariats, lateral, literal, paellas, palates, pallets, palters, partial, parties, pastier, patella, patrial, piarist, pilates, pillars, pirates, pitiers, plaster, platers, rallies, realist, replait, resplit, retails, retills, rillets, saltier, sillier, siltier, slatier, spaller, spatial, spiller, spiraea, stapler, stellar, stiller, tallier, tallies, tilapia, tillers, tipsier, traipse, trellis, triples