modified
agile and nimble both imply rapidity, ease, and lightness of movement, agile emphasizing dexterity in the use of the limbs and nimble, deftness in the performance of some act; quick implies rapidity and promptness, seldom indicating, out of context, the degree of skillfulness; spry suggests nimbleness or alacrity, esp. as displayed by vigorous elderly people; sprightly implies animation or vivacity and suggests lightheartedness
See agile in Webster's New World Roget's A-Z Thesaurus II
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