English version

mission/cost/grade etc creep

From Longman Dictionary of Contemporary Englishmission/cost/grade etc creepmission/cost/grade etc creepwhen something gradually starts to go beyond what it was intended to deal with or include He denied that giving civilian tasks to the NATO forces was a case of mission creep. creep
Examples from the Corpus
mission/cost/grade etc creepIt is a case of mission creep gone wildly over the top.
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