Overconfidence rhymes with:
coincidence, residence, abundance, accordance, ascendance, attendance, avoidance, cadence, coincidence, confidence, correspondence, credence, decadence, dependence, evidence, guidance, impedance, imprudence, incidence, independence, interdependence, jurisprudence, kloberdanz, overabundance, overdependence, precedence, providence, prudence, residence, riddance, self-confidence, subsidence, transcendence