If "restore" means to bring back to a former state:
* Destroy: To ruin or demolish completely.
* Damage: To cause harm or injury to something.
* Ruin: To destroy or greatly damage something.
* Demolish: To completely destroy a building or other structure.
* Spoil: To cause something to become unusable or unfit for use.
If "restore" means to bring back to health or good condition:
* Worsen: To make something worse.
* Deteriorate: To become worse or lower in quality.
* Decline: To become weaker or less important.
* Deplete: To use up or reduce something.
If "restore" means to bring back to power:
* Overthrow: To remove someone from power by force.
* Depose: To remove someone from a position of power, especially a monarch.
* Displace: To force someone out of their position of power.
It's important to consider the specific context of the word "restore" to determine the most appropriate antonym.