Superlative form of lively: most lively.(adjective)
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Use "liveliest" in a sentence
"It's a major score for Singapore's exchange, which has jousted with Hong Kong's in the last few years for the title of liveliest destination for new public companies."
"Now of those which have escaped the clutches of time the liveliest are the first-born."
"At 11. 30am on Tues 19th Jan we arrived at the Milhouse, which was described as liveliest hostel in BA."