Lively and cheerful (9)

I believe the answer is:

exuberant

(Other definitions for exuberant that I've seen before include "Vivacious; effusive" , "Full of energy, high spirits" , "Exeunt bar, being in high spirits" , "Full of high spirits, very lively" , "Joyous" .)

I've seen this clue in The Times.

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