Duckweed rhymes with:
milkweed, pokeweed, fireweed, krumwiede, milkweed, pokeweed, ragweed, seaweed, airspeed, aniseed, appleseed, ashmead, centipede, certainteed, cottonseed, fireweed, flaxseed, ganymede, goodspeed, highspeed, inbreed, krumwiede, linseed, lockheed, milkweed, nobody'd, nosebleed, oilseed, pitied, pokeweed, proofread, ragweed, rapeseed, rosemead, seaweed, siegfried, windspeed
Duckweed sounds like:
d'escoto, dacosta, dacquisto, dagata, daggett, dagwood, dakota, daoust, dashed, dashwood, dataquest, datext, daughety, dauzat, dazed, de-excite, deadweight, deathshot, decade, decato, decayed, deceased, deceit, decide, decided, decked, decode, decoded, decosta, decoste, decoteau, dedicate, dedicated, deduced, deduct, deducted, degidio, degood, deist, deject, dejected, desiccate, desiccated, desist, desisto, deskjet, desoto, dest, destitute, detached, detect, detected, detest, detested, diced, dickhaut, dicta, dictate, dictated, digate, digest, digested, digit, dioxide, disassociate, disassociated, discussed, diseased, disguised, disgust, disgusted, dished, diskette, disquiet, dissect, dissected, dissociate, dissuade, dissuaded, distad, ditched, docked, docket, dockside, dodged, dogged, doggett, dogwood, dossett, dost, dostie, doucet, doucette, doughtie, doughty, doused, dozed, ducked, duckett, ducote, duct, dugout, duguid, duked, duquette, dusett, dust, dusted, dusty, dwight, dyazide