Jonbenet's rhymes with:
nace, ace, apace, arianespace, base, brace, caisse, case, cayce, chace, chase, crace, dace, debase, deface, disgrace, displace, drace, efface, embrace, encase, erase, face, frace, glace, grace, heyse, incase, interlace, lace, left-brace, mace, misplace, nace, pace, place, race, rais, replace, retrace, right-brace, space, trace, vase, wace, worst-case