known

To perceive the truth or factuality of; to be certain of or that.

"He knew something terrible was going to happen."

To be aware of; to be cognizant of.

"Did you know Michelle and Jack were getting divorced? ― Yes, I knew."

To be acquainted or familiar with; to have encountered.

"I know your mother, but I’ve never met your father."

Any fact or situation which is known or familiar.

A constant or variable the value of which is already determined.

Identified as a specific type; famous, renowned.

"He was a known pickpocket."

Accepted, familiar, researched.