Propagate rhymes with:
abrogate, castigate, congregate, corrugate, delegate, desegregate, fumigate, instigate, interrogate, investigate, irrigate, koreagate, mitigate, navigate, obligate, relegate, segregate, subjugate
Propagate sounds like:
perfect, perfecta, perfected, prefaced, prefect, prepackaged, prevost, probst, professed, propagated, prophesied, proposed, propst, provoked, provost