The word delimitating 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: 20
Highest Scoring Words With Friends™ Play In The Letters delimitating
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Seven Letter Word Alert: (51 words)
ailment, aligned, aliment, anilide, dealign, dealing, delimit, dialing, diamine, dieting, digital, diimine, editing, elating, eliding, gelatin, geminal, genital, glinted, gmelina, ignited, imagine, imidine, imitate, initial, intagli, leading, letting, ligated, lignite, limited, mailing, malting, mangled, mantled, matting, melding, melting, midline, militia, mingled, miniate, mintage, netmail, tagline, tailing, tainted, tangled, teaming, tilting, tingled