DECAMP Meaning of DECAMP in English ■ verb1》 depart suddenly or secretly. 2》 archaic break up or leave a military camp.Derivatives~ment noun OriginC17: from Fr. décamper , from dé- (expressing removal) + camp 'camp'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004