Letdown rhymes with:
blastdown, countdown, meltdown, piltdown, putdown, shootdown, shutdown, writedown, ashdown, blastdown, breakdown, clampdown, closedown, comedown, countdown, crackdown, drawdown, godown, hillsdown, hoedown, knockdown, lansdowne, lockdown, lowdown, markdown, meltdown, piltdown, putdown, rundown, shakedown, shootdown, showdown, shutdown, slowdown, southdown, sundown, touchdown, turndown, underdown, writedown
Letdown sounds like:
laden, ladino, laitinen, laotian, latenan, latham, lathan, lathem, lathon, latin, latina, latini, latino, laton, latona, latonia, lattin, laudanum, laudon, lauten, lawton, layden, laythan, layton, leaden, leatham, leathem, leaton, ledden, ledeen, ledin, ledonne, leedham, leedom, lehtinen, lehtonen, leitman, lewton, leyden, liden, litan, litany, litem, lithium, lithuania, lithuanian, litman, litten, littman, littmann, litton, litwin, loadman, lodema, loden, lothian, lotion, loton, lottman, louden, loudin, loudon, louthan, lowden, lowdown, loyalton, ludden, ludeman, ludemann, ludwin, luten, lutman, luton, luttman, lutton, lyden, lydon, lytton