Words That Rhyme With "Couldn't" :

2 syllables:

credent, didn't, gooden, goulden, hadn't, needn't, pedant, prudent, rident, rodent, shouldn't, strident, student, trident, wooden, wouldn't

3 syllables:

abradant, decedent, explodent, imprudent

4 syllables:

antecedent, jurisprudent