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