If you decamp, you go away from somewhere secretly or suddenly. We all decamped to the pub. to leave a place quickly decamp to/from (décamper, from camper )
decampment
الواصلة
de·camp·ment
النطق
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[ di-'kamp, dE- ] (intransitive verb.) 1676. French décamper, from Middle French descamper, from des- de- + camper to camp.