Indigenous rhymes with:
polygynous, androgynous, exogenous, homogenous, nitrogenous, oleaginous, polygynous, androgynous, asynchronous, bituminous, brazenness, chitinous, deaconess, exogenous, gelatinous, givenness, gluttonous, homogenous, larcenous, luminous, membranous, monotonous, mountainous, mutinous, nitrogenous, nonpoisonous, oleaginous, ominous, outspokenness, patroness, poisonous, polygynous, ravenous, ruinous, tetanus, titinus, uranus, villainous, voluminous
Indigenous sounds like:
indecency, indexing, indochinese, inducing