Breakdown rhymes with:
shakedown, crackdown, knockdown, lockdown, markdown, shakedown, ashdown, blastdown, clampdown, closedown, comedown, countdown, crackdown, drawdown, godown, hillsdown, hoedown, knockdown, lansdowne, letdown, lockdown, lowdown, markdown, meltdown, piltdown, putdown, rundown, shakedown, shootdown, showdown, shutdown, slowdown, southdown, sundown, touchdown, turndown, underdown, writedown
Breakdown sounds like:
bergstein, bergsten, berstein, bifurcation, boorstin, bragdon, braughton, braxton, breighton, briggstone, brighten, brightman, brighton, brockton, brogden, brogdon, brookstone, broughton, broxton, burstein, burston