Agile is the quality of a person who can answer quickly to problems and solve them
I think its " Endless "
Explanation:
Explanations are hard with questions like context but Ill try my best.
Endless is a close enough synonym for Immeasurable, since both words describe something that's either out of reach or never-ending
Im sorry if Im wrong.
Describe this extended metaphor from the poem some tower of song with lofty parapet skid did disks