Papermate rhymes with:
acclimate, amalgamate, automate, breakmate, checkmate, classmate, decimate, dichromate, glucosamate, glutamate, inmate, multimate, overestimate, phonemate, playmate, primate, roommate, schoolmate, shipmate, shoemate, shumate, stalemate, teammate, underestimate, unimate
Papermate sounds like:
paramount, paranoid, parent, parente, parenteau, parenthood, parenti, parrent, peppermint, permanent, permanente, permeate, permeated, permenante, permit, permitted, permount, permut, permutate, permutated, permute, pernod, preeminent, preened, premeditate, premeditated, primate, primed, print, printed, printout, printy, promenade, prominent, promote, promoted, pronto, prowant, pruned, pruneda, prunty, prurient, pyramid