1) Bluntly 2) Categorically 3) Dully 4) Unconditionally 1) Categorically 2) Downrightly 3) How some things are denied 4) In a monotonous way 5) In an unqualified manner 6) One way to deny something 7) Point-blank 8) Showing little emotion 9) Unconditionally 10) Unequivocally 11) Unmistakably 12) Without qualification 
• (adv.) In a flat manner; evenly; horizontally; without spirit; dully; frigidly; peremptorily; positively, plainly.
Flat'ly adverb In a flat manner; evenly; horizontally; without spirit; dully; frigidly; peremptorily; positively; plainly. 'He flatly refused his aid.' Sir P. Sidney. « He that does the works of religion slowly, flatly , and without appetite.» Jer. Taylor. 
[adv] - in an unqualified manner
categorically adverb in an unqualified manner; `he flatly denied the charges`