The word signalizations 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: 28
Highest Scoring Words With Friends™ Play In The Letters signalizations
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Seven Letter Word Alert: (49 words)
against, agnosia, agonist, aisling, analogs, anginal, anginas, anglist, anoints, antlion, atonias, atoning, gliosis, goannas, initial, intagli, lasting, liaison, lignins, linings, listing, loaning, losings, nailing, nations, oligist, sailing, salting, signals, silting, sizings, slating, slogans, soiling, sonatas, stalags, stanols, stanzas, stoning, tailing, tilings, toiling, tonsils, tossing, zingani, zingano, zinnias, zionist, zonings