If "search" means "to look for something", then the antonym could be:
* Find: If you're searching for something, the opposite is to find it.
* Discover: This implies a finding that is unexpected or previously unknown.
* Locate: This implies a specific and successful finding.
* Ignore: To choose not to look for something.
* Overlook: To miss something, perhaps due to carelessness.
If "search" means "to explore or investigate", then the antonym could be:
* Ignore: To choose not to explore or investigate.
* Dismiss: To reject or disregard something.
* Negate: To deny or disprove something.
The best antonym for "search" will depend on the specific situation and the meaning of "search" in that context.