Here's what rhymes with opportinity.
crystallinity Words that almost rhyme with opportinity
deity obesity ideality genially peony cheekily legally speedily decency peacefully decently fealty peaceably aridity realty serenely benignity naivety piquancy drearily obscenely regally breezily dubiety piquantly wheezily recently secrecy illegally greedily regency uneasily zealously dreamily gleefully leniency leniently sleepily reapply feasibly speciously greasily heedfully needfully sneakily creakily creepily queasily sleazily appreciably spontaneity ceaselessly grievously ingeniously needlessly unequally unevenly indecency heedlessly seamlessly deceitfully indecently congenially believably speechlessly coequally squeakily creamily frequency frequently agreeably homogeneity supremely historicity coherently irretrievably unbelievably unspeakably facetiously egregiously irredeemably heterogeneously covetously inappreciably sleeplessly anemically conveniently heterogeneity conceivably simultaneity phonemically centripetally conceitedly indefeasibly unrelievedly infrequently unfrequently disagreeably infrequency contemporaneity inconceivably inconveniently