Rapeseed rhymes with:
aniseed, appleseed, cottonseed, flaxseed, linseed, oilseed, airspeed, aniseed, appleseed, ashmead, centipede, certainteed, cottonseed, duckweed, fireweed, flaxseed, ganymede, goodspeed, highspeed, inbreed, krumwiede, linseed, lockheed, milkweed, nobody'd, nosebleed, oilseed, pitied, pokeweed, proofread, ragweed, rosemead, seaweed, siegfried, windspeed
Rapeseed sounds like:
rapist, ravaged, rebooked, rebuked, refocused, refused, repackaged, repacked, repossessed, revised, revisit, revisited, revoked, rhapsody, riposte, rivest, robichaud, robust, robusta