Here's what rhymes with wouldst.
couldst Words that almost rhyme with wouldst
wolfed bulked woofed put looked foot pushed cooked accursed hooked booked soot hoofed yurt accurst bushed mooched afoot smooched webfoot caput unhooked recooked overlooked clubfoot overcooked precooked crowfoot overbooked congruent occiput underfoot pussyfoot splayfoot tenderfoot