The definition of lively is moving quickly, full of life or full of spirit.(adjective)
An example of lively used as an adjective is in the phrase, "a lively song," which means an upbeat song.
See lively in Webster's New World College Dictionary
Origin: ME liflich < OE liflic: see life & -ly
See lively in American Heritage Dictionary 4
adjective live·li·er, live·li·est
Origin: Middle English lifli
Origin: , from Old English līflīc
Origin: , from līf, life; see leip- in Indo-European roots.
Learn more about lively