definitely, certainly, of course, undoubtedly, decidedly, assuredly, with decision, decisively, absolutely, entirely, unequivocally, flatly, distinctly; with no ifs, ands, or buts about it*.
Antonyms indecisively, hesitantly, indistinctly.
"emphatically." YourDictionary, n.d. Web. 16 August 2018. <http://thesaurus.yourdictionary.com/emphatically>.
emphatically. (n.d.). Retrieved August 16th, 2018, from http://thesaurus.yourdictionary.com/emphatically
In a direct, positive manner: