Synonyms for categorically

absolutely, affirmatively, conclusively, decidedly, decisively, definitively, emphatically, flat-out, incontestably, incontrovertibly, indisputably, irrefutably, outrightly, positively, resolutely, surely, unambiguously, unarguably, unconditionally, undeniably, unequivocally, unqualifiedly, unquestioningly, unreservedly, utterly, wholly, without question