rehash

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re·hash • v. / rēˈhash/ [tr.] put (old ideas or material) into a new form without significant change or improvement: he contented himself with occasional articles in journals, rehashing his own work. ∎  consider or discuss (something) at length after it has happened: is it really necessary to rehash that trauma all over again?• n. / ˈrēˌhash/ a reuse of old ideas or material without significant change or improvement: the spring show was a rehash of the summer show from the previous year.