The phrase "matter of factly" denotes a straightforward, neutral, and objective attitude towards something. It implies a lack of emotion or embellishment in the way one expresses themselves. On the other hand, its antonyms could include words like dramatically, passionately, poetically, or expressively. These terms suggest a more emotive response, with a focus on personal feelings, tone, or expressive language. By using antonyms of "matter of factly," you can add a new dimension to your speech or writing, emphasizing the emotional, subjective, or aesthetic aspects of the topic you are talking about.