The quality of being able to move quickly and easily; the ability to think and respond fast.
From French agile, from Latin agilis (nimble, active), derived from agere (to do, move). The suffix -ness forms nouns from adjectives, expressing a state or quality.
Agileness became a prized trait in military strategy and sports training, but it's also key in how animals like cats have survived for thousands of years—their ability to dodge and weave made them nearly impossible predators.
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