The word sequentially 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: 27
Highest Scoring Words With Friends™ Play In The Letters sequentially
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Seven Letter Word Alert: (58 words)
antique, auletes, aunties, elastin, eluants, eluates, eluents, enstyle, ensuite, entails, equally, equates, equines, eustely, eustyle, eyeslit, inquest, install, instyle, inulase, lateens, leanest, lenites, lentils, lineate, lintels, lunates, luniest, lustily, nailset, nastily, nullity, quality, queenly, quieten, quietly, quillet, quinsey, saintly, salient, saltily, sequela, sequent, sinuate, squally, squatly, squinty, sunlily, syenite, tallies, tellies, tensely, tensile, tequila, unsilty, utensil, yanquis, yeelins