Synonyms of categorically

2 Syllables
flatly, really, indub, doubtless, truly
3 Syllables
exactly, verily, pointedly, surely, easily, actually
4 Syllables
genuinely, minutely, concretely, admittedly, precisely, decidedly
5 Syllables
decisively, conclusively, unambiguously, absolutely, unquestionably, positively, specifically, unqualifiedly, authentically, definitely
6 Syllables
indicatively, unequivocally, unconditionally