* "She looks tired." Here, "looks" is the verb indicating an appearance.
However, "looks" is not a visible verb.
Visible verbs are verbs that describe actions that can be seen, such as "run," "jump," "walk," "eat," "sleep," etc.
"Looks" describes an appearance, which is a state of being, not an action. It's not something you can physically see someone doing.
Therefore, "looks" is not an example of a visible verb.