The word chiropractics is playable in Words With Friends™, but 1 blank substituting for the letter 'c' is 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™ Plays In The Letters chiropractics
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Seven Letter Word Alert: (38 words)
airport, airship, apricot, arctics, captors, carhops, carport, carrots, chaotic, chariot, coarcts, cochair, corsair, critics, haptics, haricot, harpist, ischiac, isopach, octarch, ostrich, pachisi, parrots, piarist, practic, prosaic, raptors, rhotics, satiric, sciatic, scoriac, scratch, toparch, triarch, trocars, trochar, trophic, tropics