Simple past tense and past participle of rehab.(verb)
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Use "rehabbed" in a sentence
"The "Very Funny" cable network burned off the whopping nine-episode season of its sly charmer about Chicago sportswriter PJ (Jordana Spiro) and her pals on Sundays opposite such sky-high-profile cable competition as Keeping Up with the Kardashians and Mad Men — whose costar Joel Murray, aka rehabbed alky Freddy Rumsen, guested on Boys as the owner who sold the gang's hangout, Crowley's, to Brando (Reid Scott) in the season finale."