The word declaratory 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: 18
Highest Scoring Words With Friends™ Play In The Letters declaratory
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Seven Letter Word Alert: (32 words)
acatery, acolyte, acylate, aerator, already, areolar, arrayed, arylate, caldera, carload, caroled, caroler, carroty, coaltar, cordate, cotylae, cotylar, crayola, creator, daycare, delator, leotard, located, lyrated, oracled, orderly, ratrace, reactor, realtor, rectory, tracery, treacly