Here's what rhymes with usefully.
Words that almost rhyme with usefully
youthfully truthfully untruthfully ruefully fruitfully uselessly euphony tunefully unity brutally eulogy gloomily lunacy moodily neutrally frugally futilely gruesomely broodily beautifully jewelry mutiny suitably humanly ruthlessly futurity fruitlessly woozily snootily immunity scrutiny acuity annuity fluency crucially fluently prudently stupidly truancy garrulity irreducibly humourlessly community presumably credulity disunity vacuity immovably tenuity unsuitably contumelies glamourously opportunity autoimmunity congruity contumacy imprudently impudently ambiguity ingenuity translucency excusably exiguity continuity contiguity importunity perspicuity promiscuity inexcusably