Learner's definition of AGILE
[more agile; most agile]
able to move quickly and easily
She is the most agile [=nimble] athlete on the team.
Leopards are very fast and agile.
a car with agile handling [=a car that moves quickly and smoothly when the steering wheel is turned]
quick, smart, and clever
an agile mind
an agile writer
an agile thinker