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