1) Abscond 2) Break camp 3) Clear out 4) Depart 5) Depart in haste 6) Fold tents and depart 7) French word used in English 8) Get back on the trail 9) Leave a bivouac 10) Leave a camp 11) Leave secretly 12) Leave suddenly 13) Move away 14) Pack up and leave 15) Pack up the tent and leave 16) Pack up your tent and leave Found on https://www.crosswordclues.com/clue/decamp
• (v. i.) To break up a camp; to move away from a camping ground, usually by night or secretly. • (v. i.) Hence, to depart suddenly; to run away; -- generally used disparagingly. Found on http://thinkexist.com/dictionary/meaning/decamp/
to depart from a camp; to pack up equipment and leave a camping ground: We decamped before the rain began. · to depart quickly, secretly, or unceremoniously: The band of thieves decamped in the night. Found on https://www.infoplease.com/dictionary/decamp