The word unforgettably 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: 26
Highest Scoring Words With Friends™ Play In The Letters unforgettably
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Seven Letter Word Alert: (97 words)
abettor, abluent, abutter, baloney, baneful, baronet, battery, battler, bayonet, blarney, bloater, blotter, blunger, blunter, bottler, brangle, bungler, buoyant, burgeon, butanol, buttery, engraft, fanbelt, fatberg, flatout, flatten, flatter, floater, flouter, flutter, flybane, flyboat, foregut, forelay, fortlet, fortune, froglet, frontal, funeral, fungate, furlong, furoate, garotte, gaunter, gauntly, gauntry, gloater, globate, glutton, goutfly, granule, grayout, greatly, gruntle, gunboat, languor, lottery, lounger, nebular, neutral, notable, notably, orangey, outbrag, outearn, outrage, outrant, outrate, ragbolt, rageful, refloat, refutal, regulon, retotal, rubeola, taboule, tangelo, taunter, tearful, tenably, toluate, totable, tourney, trayful, trouble, tugboat, tunable, tunably, tutorly, unalert, unalter, ungraft, unlayer, unleafy, utterly, yearful, younger