The word disinfecting 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: 23
Highest Scoring Words With Friends™ Play In The Letters disinfecting
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Seven Letter Word Alert: (34 words)
deficit, deicing, deistic, denting, dentins, diciest, dietics, dieting, dingies, dinting, editing, endings, fencing, fending, fidgets, finding, finings, ignited, ignites, incised, incited, incites, indents, indices, indicts, indites, infects, intends, nesting, sending, sifting, tending, tensing, tidings