Simple past tense and past participle of smack.(verb)
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Use "smacked" in a sentence
"Labour said the term smacked of gerrymandering, and recalled the scandal at"
"The role and the movie it was trapped within smacked of loud message-making, and pushed an agenda far too heavily for anything of substance to really come to the surface."
"Palin smacked a grand slam at the convention .. but it was all down hill from there."