Full of energy
'full of energy' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for spry that I've seen before include "'Active and lively, nimble (4)'" , "Agile (for one's age?)" , "Nimble, brisk" , "Light on one's feet" , "Alert" .)
'full of energy' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for vibrant that I've seen before include "Strong and vivid" , "Brightly-coloured" , "Lively; pulsating" , "(Of colour) bold, strong" , "Bright, thrilling or resonant" .)