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