If "infuse" means to fill something with a quality or characteristic:
* Deprive: To take away a quality or characteristic.
* Empty: To remove something from within.
* Drain: To remove liquid or energy from something.
* Extract: To remove something from a substance.
* Diminish: To make something smaller or weaker.
If "infuse" means to steep something in liquid:
* Dry: To remove moisture from something.
* Dehydrate: To remove water from something.
If "infuse" means to inject a substance into something:
* Withdraw: To take a substance out of something.
* Remove: To take something away from something else.
If "infuse" means to combine something with something else:
* Separate: To divide or split something into parts.
* Isolate: To keep something apart from other things.
The best antonym depends on the specific context of how "infuse" is being used.