How do you make the word visible an adverb?

You can't directly make "visible" into an adverb. "Visible" is an adjective, meaning "able to be seen."

Here's how you can make the idea of "visible" into an adverb:

* Use an adverb related to visibility:

* Clearly: "The sign was clearly visible from the highway."

* Plainly: "The mistake was plainly visible in the report."

* Obviously: "It was obviously visible that she was upset."

* Prominently: "The new building stood prominently visible on the skyline."

* Use a phrase:

* In a visible way: "She displayed her emotions in a visible way."

* Visibly: "He visibly cringed at the sound of the joke."

The best choice depends on the specific context and the nuance you want to convey.