2 syllables:
brunner, brunor, bunner, chunner, cunner, done her, dunner, funner, gunnar, gunner, gunnor, junnar, koner, lunner, mener, munnar, onere, punner, runner, run her, scunner, shunner, spun her, stunner, tonner, tonnerre, won her, boehner, bohner, bonar, boner, broner, cloner, croner, dohner, donor, droner, foner, goehner, groaner, groner, hoener, hoenir, hohner, honer, known her, kohner, kroener, kroner, kronor, loaner, lohner, loner, moaner, moner, owner, phoner, poner, rohner, schoener, shown her, soner, stoner, toner, zoner, zonnar

3 syllables:
arms-runner, baserunner, base runner, blue runner, bookrunner, forerunner, front-runner, frontrunner, ghostrunner, gunrunner, mudrunner, netrunner, outrunner, racerunner, race runner, roadrunner, road runner, rumrunner, showrunner, skygunner, snowrunner, stonerunner, atoner, bemoaner, bewohner, blood donor, chaloner, co-owner, coloner, componer, condoner, deboner, dethroner, einwohner, exponer, hizzoner, homeowner, imponer, intoner, jawboner, landowner, mineowner, ordonner, part-owner, postponer, pundonor, shareowner, shipowner, slaveowner, storeowner, sundowner, suponer, uptowner

4 syllables:
blockade-runner, eurorunner, machine-gunner, machine gunner, marcobrunner, overrunner, rainbow runner, runner-runner, scarlet runner, siivagunner, talesrunner, the kite runner, organ donor, telephoner

5 syllables:
marathon runner, plantation owner, property owner

6 syllables:
toyota 4runner, versions of blade runner, universal donor