/ ˈædʒaɪl; NAmE ˈædʒl/ adjective
1.
able to move quickly and easily
SYN nimble
2.
able to think quickly and in an intelligent way :
an agile mind / brain
► agil·ity / əˈdʒɪləti; NAmE / noun [ U ]:
He had the agility of a man half his age.
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WORD ORIGIN
late Middle English : via French from Latin agilis , from agere do.