Here's what rhymes with unpretentiously.
sententiously Words that almost rhyme with unpretentiously
jealously essentially tendency penalty potentially specially jealousy mentally terribly carelessly tenancy tremendously dentistry recklessly breathlessly testily portentously senselessly identity density heavily readily destiny steadily deputy heavenly legacy centrally chemically heresy parity specialty conscientiously helplessly leprosy parody sensibly severally verily medically merrily relentlessly restlessly splendidly warily wearily lamentably impetuously legibly respectably tangentially tenantry blessedly devilry lieutenancy selflessly temperately apparently carefully therapy primarily chemistry pregnancy presently remedy seventy dependency secondly allegedly hegemony melody ostensibly peasantry pleasantly recipe ascendancy brevity felony pedigree rarity serenity ascendency contentedly dreadfully marvellously militarily preferentially sesame amenity confidentially indelibly pedantry professedly providentially revelry unbearably verity credibly helpfully impeccably resentfully deferentially intensity independently integrity prosperity clarity fidelity fundamentally supremacy temporarily accidentally disparity heredity incidentally polarity posterity respectfully indemnity longevity clemency exponentially immensity insensibly sequentially temerity weaponry acceptably clandestinely flexibly heraldry incrementally inequity pleasantry telepathy velvety biochemically existentially indispensably instrumentally nonentity regrettably temperamentally unsteadily necessarily necessity ordinarily solidarity voluntarily arbitrarily expectancy momentarily transparency dexterity incessantly incredibly solemnity biochemistry contemptuously developmentally celerity confessedly expectantly hilarity mastectomy regretfully telemetry transparently unpleasantly geochemistry incontestably sentimentally unacceptably vasectomy successfully popularity extremity familiarity sincerity chemotherapy discrepancy experimentally customarily environmentally perplexity radiotherapy unnecessarily unsuccessfully hysterectomy secondarily coincidentally inexpressibly inclemency quintessentially superintendency complexity similarity peculiarity psychotherapy regularity singularity convexity granularity insincerity physiotherapy subsidiarity tonsillectomy extraordinarily irregularity unfamiliarity