Artificial intelligent assistant

light-limbed

light-limbed, a.
  Having light limbs; agile; nimble.

1695 Lond. Gaz. No. 3119/4 Lost.., a brown bay Mare,..pretty light limb'd. 1812 Byron Ch. Har. i. lxxiv, The light-limbed Matadore. 1855 Kingsley Heroes ii. (1868) 20 A young man more light-limbed than the stag.

Oxford English Dictionary

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