rehash

When you rehash something, you use it again without altering or changing it much. Your favorite band's new album will be a disappointment if they just rehash all their old hits.

Sometimes movie sequels are great films in their own right, but often they simply rehash the storyline, characters, and jokes from the original. You can call a movie like this a rehash. Another way to rehash is to go over something again, rethinking or reconsidering it: "She just wants to rehash that argument, trying to figure out why her friend got so angry."

Definitions of rehash
  1. verb
    present or use over, with no or few changes
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    type of:
    recycle, reprocess, reuse
    use again after processing
  2. verb
    go back over
    synonyms: hash over, retrograde
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    type of:
    recap, recapitulate
    summarize briefly
  3. noun
    old material that is slightly reworked and used again
    “merely a dull rehash of his first novel”
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    type of:
    material
    information (data or ideas or observations) that can be used or reworked into a finished form
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