The word singularity 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: 18
Highest Scoring Words With Friends™ Play In The Letters singularity
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Seven Letter Word Alert: (51 words)
agility, airguns, airings, aisling, anglist, angrily, arising, gastrin, gauntly, gauntry, gristly, guitars, gustily, insular, intagli, lairing, langurs, lasting, listing, liturgy, lusting, nastily, nitryls, railing, raising, ratings, rituals, rulings, rustily, rusting, sailing, saintly, salting, silting, slating, slaying, stagily, staring, staying, stringy, stygian, styling, suiting, syringa, tailgun, tailing, tilings, trysail, unitary, unsilty, urinals