Simple past tense and past participle of favorite.(verb)
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Use "favorited" in a sentence
"Instead, he says the best part about being favorited is being featured on users’ Technorati front pages:"
"About three-quarters of the way through, readers finally hear, for the first time, about how this Twitter account was held by another user prior to being obtained by the Department of Health and Human Services, and that it was this previous owner who had "favorited" all those tweets."
"It's the incredibly true story of how the Department of Health and Human Services obtained a Twitter handle from another user, who had apparently "favorited" some tweets pertaining to the aforementioned vodka and rapper."