/ mjuːˌtɑːtɪs mjuːˈtændɪs; NAmE ; muː-/ adverb
(from Latin , formal ) (used when you are comparing two or more things or situations) making the small changes that are necessary for each individual case, without changing the main points :
The same contract, mutatis mutandis, will be given to each employee (= the contract is basically the same for everybody, but the names, etc. are changed).
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WORD ORIGIN
Latin , literally things being changed that have to be changed .