Simple past tense and past participle of rewatch.(verb)
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Use "rewatched" in a sentence
"When I first rewatched The Three Doctors a couple of years ago, my assessment of it was pretty harsh, but I gave it another go this last week and saw more merit in it this time."
"I was deeply irritated to discover that a draft I had written of this post mysteriously got deleted after I had rewatched (and written up) 23 episodes of the 26 covered here."
"I rewatched the pilot of the original straight afterwards, and it's virtually the same, down to the scene, almost down to the word."