When trying to express perseverance or determination, the word persistently is one commonly used descriptor. However, there are a variety of synonyms that can be used to add variation and nuance to this idea. Some options might include tenaciously, resolutely, doggedly, unyieldingly, steadfastly, or perseveringly. Each of these words emphasizes a slightly different aspect of persistent behavior - from a refusal to give up in the face of obstacles to a steady and unwavering commitment to a goal. By choosing between these different synonyms, writers can better capture the specific tone or mood they want to convey.