Simple past tense and past participle of retweet.(verb)
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Use "retweeted" in a sentence
"If you think that was hilarious, you will really love this comment that Jeff Poor, who writes for something called the Media Research Center's Business & Media Institute, retweeted from a conservative blogger: I swear, if Meghan McCain gets any dumber she'll be drooling on her boobs."
"I found a good way to get followers was to get "retweeted" -- meaning that someone would pick up my tweet and send it to their followers preceded by the code "RT @juliaangwin.""
"Twitter is a great viral marketing channel, and for many users the aim is to have their story 'retweeted' - i.e. passed on by other users - as many times as possible."