1) Categorically 2) Conclusively 3) Convincingly 4) Easy way to win 5) Finally 6) In a resolute way 7) In an indisputable degree 8) Irrefutably 9) Overwhelmingly 10) Resolutely 11) With finality 12) With firmness 1) Determinedly 2) Resolutely 3) Significantly 4) Thoroughly 
[adv] - with firmness 2. [adv] - with finality 3. [adv] - in an indisputable degree
adverb with finality; conclusively; `the voted settled the argument decisively`