Definite rhymes with:
indefinite, indefinite, indefinite, infinite, affectionate, baronet, bicarbonate, cabinet, compassionate, coordinate, diaconate, dispassionate, extortionate, fortunate, geminate, indefinite, indiscriminate, infinite, innominate, laminate, nominate, nondiscriminate, obstinate, passionate, proportionate, sultanate, unfortunate
Definite sounds like:
daponte, datapoint, debenedetto, deepened, defamed, defend, defended, defiant, defined, defund, depend, depended, depinto, deponte, deviant, dibenedetto, dipinto, divinity, dupont