* Ignore: To completely disregard or pay no attention to.
* Disregard: To pay no attention to or treat as unimportant.
* Reject: To refuse to accept or consider.
* Avoid: To stay away from or keep clear of.
* Differ: To be unlike or different from.
* Depart from: To move away from or deviate from.
* Contradict: To state the opposite of.
* Oppose: To be against or resist.
The best antonym for "emulate" will depend on the specific context.