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