Webster’s Revised Unabridged Dictionary · 1913
Decamp
De·camp′ (dē·kămp′), v. i. [imp. & p. p. Decamped; p. pr. & vb. n. Decamping.] [F. décamper; pref. dé- (L. dis) + camp camp. See Camp.] 1. To break up a camp; to move away from a camping ground, usually by night or secretly. Macaulay.
2. Hence, to depart suddenly; to run away; — generally used disparagingly.
The fathers were ordered to decamp, and the house was once again converted into a tavern. Goldsmith.