What is the antonym for asterisk?

There isn't a single, perfect antonym for "asterisk" because it depends on the context. Here are some possibilities depending on what aspect of "asterisk" you want to oppose:

If you're talking about the symbol itself:

* Plain text: This is the opposite of a symbol, representing the absence of any special character.

* Other symbols: If you're talking specifically about the asterisk as a symbol, you could use any other symbol like a period, comma, hyphen, etc.

* Blank space: This is the most literal opposite of a symbol, representing the absence of any character whatsoever.

If you're talking about the meaning of an asterisk:

* Clarity: An asterisk often indicates a footnote or clarification, so the opposite could be "clarity" itself.

* Directness: If an asterisk is used to add a side note, the opposite could be "directness" or "straightforwardness."

Ultimately, the best antonym for "asterisk" depends on the specific context and what aspect of the word you are trying to contrast.