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