"She Walks most gracefully" may very well be a synonym for "She walks extremely gracefully". But "she walks most gracefully" could also be utilized to mean "she walks essentially the most gracefully". So, the version with no "the" carries each meanings (or sets of meanings). We use cookies as well https://ragingbookmarks.com/story20957444/the-fact-about-best-ayurvedic-medicine-for-high-cholesterol-that-no-one-is-suggesting