Wiretap refers to the act of listening in on a private conversation or communication, typically by authorities such as the government or law enforcement agencies. However, there are some antonyms for the word that describe actions that are quite the opposite. For instance, one antonym for wiretap is disclose, which means to reveal or make something known. Another antonym for wiretap is broadcast, which means to transmit a message or information to a wide audience. Furthermore, leak is another antonym for wiretap, which means to release information without authorization. Finally, reveal is another antonym for wiretap, which means to make something previously unknown to be seen or understood.