What is the verb of gulf?

There isn't a direct verb form of the noun "gulf." However, the word "gulf" can be used as a verb in a metaphorical sense, meaning "to separate or divide by a wide difference or space."

For example:

* The political gulf between the two parties has widened.

* Their different perspectives on the issue gulfed them apart.

In these examples, "gulf" is used as a verb to describe the act of creating a division or distance.