Slowdowns rhymes with:
showdowns, breakdowns, closedowns, countdowns, crackdowns, drawdowns, markdowns, putdowns, shakedowns, showdowns, shutdowns, southdown's, touchdowns, writedowns
Slowdowns sounds like:
salting, saluting, scalding, scolding, shackleton's, shackletons, shelton's, shielding, skeletons, slating, sledding, sleuthing, sliding, slitting, slotnick, slotting, solutions, sultan's, sultans