Plenary rhymes with:
fitzhenry, henery, henrie, mcenery, binary, cannery, chicanery, conery, connery, fernery, finery, fitzhenry, flanary, flanery, flannery, grainery, greenery, gunnery, henery, henrie, joinery, machinery, mcenery, nunnery, ornery, refinery, regnery, scenery, whinery, whinnery, winery
Plenary sounds like:
palmer, palmeri, palmero, palmieri, palmira, palmore, palomar, plainer, planar, planer, planner, plenmeer, plumer, plumeri, plummer, pollner, polymer, pulmonary