The word constipating 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: 22
Highest Scoring Words With Friends™ Plays In The Letters constipating
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Seven Letter Word Alert: (60 words)
actions, agnosic, agonist, anionic, anoints, atonics, atoning, canting, cantons, caption, casting, cations, catnips, catting, coating, coining, consign, contain, copings, copsing, costing, gnostic, iconist, incants, instant, nations, niacins, nicosia, octants, opining, paining, panting, pasting, patting, pianist, pinions, pitting, poising, posting, potting, psionic, saponin, scoping, sitting, sniping, soaping, spacing, spicing, spiting, spongin, stannic, stating, station, stoning, tapings, tasting, tinpots, tinting, tipcats, titanic