<p>Many varieties of understanding subsist in a thinker’s having the right kind of mental connection to a certain body of fact (or putative fact), a connection often called “grasp”. The use of a single term suggests a single connection that does the job in every kind of understanding. Then again, “grasp” might be an umbrella term covering a diverse plurality of understanding-granting mind-world relations. This paper argues for the former, unified view of grasp in two ways. First, it advances a broad, ability-based construal of grasp, along with a test for lack of grasp, that suggests that a certain specific connection plays an essential role in many varieties of understanding. Second, the paper considers a number of challenges to the thesis of unity that arise in a range of different kinds of understanding (scientific, moral, objectual, humanistic), and seeks to disarm them.</p>