What is the verb of reliable?

There isn't a direct verb form of "reliable." "Reliable" is an adjective, describing something that can be trusted or depended on.

To express the concept of being reliable as a verb, you could use:

* Depend on: "You can depend on him to arrive on time."

* Trust: "I trust her to get the job done."

* Count on: "You can count on her for support."

* Rely on: "We rely on this system to keep the lights on."

You can also use the noun form "reliability" in a verb phrase:

* Ensure reliability: "We are working to ensure the reliability of our service."

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