Imbalance rhymes with:
balance, unbalance, balance, palance, unbalance, vallance, ambivalence, ambulance, balance, ballance, benevolence, condolence, counterbalance, dolence, equivalence, excellence, insolence, nonviolence, opulence, palance, parlance, pestilence, petulance, prevalence, resemblance, roylance, semblance, silence, somnolence, surveillance, turbulence, unbalance, valence, vallance, vigilance, violence, virulence
Imbalance sounds like:
imbalances, impaling, implying, inflames, inflaming, influence, influences, influenza