Publicly stating or supporting a policy counter to the official party policy(adjective)
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Use "off-message" in a sentence
"Tevez, in Manchester against his will and off-message for longer than the club will care to remember, was nowhere to be seen."
"Now, dear Seamus, we come to the most difficult task of all, firing you—for disloyalty and for, most especially, leading the press off-message on my campaign."
"It's not the only thing that Scott, Davey, Lewis, James, Dougie etc are refreshingly and brutally off-message and honest about."