Decamp rhymes with:
camp, encamp, kamp, kampe, vancamp, amp, camp, champ, clamp, cramp, damp, encamp, gamp, hamp, hampe, kamp, kampe, kramp, krampe, lamp, lampe, lampp, ramp, revamp, samp, schamp, shamp, stamp, tamp, tramp, trampe, unclamp, vamp, vancamp
Decamp sounds like:
datacomp, dicamba, digenova, dignify, duchamp