Definitions of lively:

• adjective:   full of zest or vigor
• adjective:   characterized by energetic activity

  Example: "A lively baby"

• adjective:   filled with events or activity

  Example: "A lively period in history"

• adjective:   full of life and energy

  Example: "A lively discussion"

• adjective:   full of spirit

  Example: "This whole lively world"

• adjective:   quick and energetic

  Example: "A lively gait"

• adjective:   rebounds readily

  Example: "A lively tennis ball"

• name:  A surname (common: 1 in 25000 families; popularity rank in the U.S.: #2819)