Here are some examples:
* "Bolt" can mean to fasten something securely, or to move very quickly.
* "Cleave" can mean to stick together, or to separate.
* "Dust" can mean to remove dust, or to sprinkle dust on something.
* "Fast" can mean to move quickly, or to be fixed in place.
* "Sanction" can mean to approve something, or to punish something.
Contranyms can be tricky, as the meaning of the word depends entirely on the context in which it is used. It's important to pay attention to the surrounding words and phrases to determine the intended meaning.
Contranyms are often a source of amusement and linguistic fascination!