If you are referring to animation, then:
* Static
* Inanimate
* Still
* Lifeless
If you are referring to someone being lively or enthusiastic, then:
* Unenthusiastic
* Passive
* Bored
* Dull
* Lifeless
If you are referring to something being lively or exciting, then:
* Dull
* Boring
* Monotonous
* Uninteresting
Please provide more context so I can give you a more precise antonym.