Here's what rhymes with excruciatingly.
gratingly nauseatingly ingratiatingly hesitatingly fascinatingly irritatingly humiliatingly illuminatingly infuriatingly aggravatingly devastatingly exasperatingly calculatingly accommodatingly invigoratingly titillatingly unhesitatingly deprecatingly penetratingly intimidatingly Words that almost rhyme with excruciatingly
ragingly engagingly scathingly basically amazingly creatively rakishly unfailingly appreciatively evasively piratically jadedly persuasively collaboratively animatedly legislatively pervasively unavailingly imitatively abrasively qualitatively authoritatively meditatively exaggeratedly prosaically entertainingly exasperatedly lackadaisically algebraically uncomplainingly complicatedly administratively manipulatively