General opposites:
* Dull: This is a common and general opposite, meaning lacking in excitement or interest.
* Quiet: This emphasizes the absence of movement, noise, or activity.
* Inactive: This focuses on a lack of energy or action.
* Sleepy: Implies a state of tiredness and lack of alertness.
* Boring: Describes something that lacks interest or excitement.
More specific opposites:
* Depressed: If "lively" is used to describe someone's mood, "depressed" could be the opposite.
* Still: This is the opposite of lively movement.
* Stagnant: This suggests a lack of flow or progress.
* Dead: This is a more extreme opposite, implying a complete lack of life or energy.
To choose the best opposite, consider the specific situation and the meaning of "lively" in that context.