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