The word dogmatising 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 dogmatising
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Seven Letter Word Alert: (26 words)
agonism, agonist, amongst, angioid, animist, diatoms, diosmin, dogtags, domains, gaiting, gigaton, gnomist, goading, imaging, indigos, maggots, mastoid, matings, misting, moating, sigmoid, smidgin, smiting, staging, tidings, timings