General Antonyms:
* Unusually: This emphasizes the opposite of what is common or expected.
* Atypically: This is a more formal synonym for "unusually."
* Exceptionally: This implies something stands out from the norm in a positive way.
* Uncommonly: This implies something is rare or infrequent.
* Rarely: This implies something happens only occasionally.
Specific Antonyms depending on Context:
* Untypically: This emphasizes the specific situation deviating from the norm.
* Uncharacteristically: This suggests the action is out of line with someone's usual behavior.
* Conversely: This emphasizes the opposite of what is generally true.
* Differently: This emphasizes the action being done in a way that's distinct from the usual method.
Example:
* Typically, the restaurant is busy on Friday nights. (Antonym: Unusually, the restaurant was quiet last Friday night.)
The best antonym will depend on the specific meaning you want to convey.