tenaciously

This adverb conveys a sense of stubborn strength and unwavering grip, whether applied to a physical object or a mental conviction. It carries a strong positive connotation of resilience and grit, though in certain contexts, it can lean toward an obsessive or inflexible refusal to change one's mind.

Because it describes the manner of an action, it is typically used to modify verbs of holding, clinging, pursuing, or maintaining. It is more intense than "persistently" and implies a tighter, more desperate or determined bond than "steadfastly."