Acceptance of deed

What does Acceptance of deed mean in American Law?

The definition of Acceptance of deed in the law of the United States, as defined by the lexicographer Arthur Leff in his legal dictionary is:

Tender or even delivery of a deed to property is not sufficient to pass title thereto; there must be some manifestation, by word or act, by the recipient that he accepts the tender or delivery. There is rarely a problem in making out this acceptance, inasmuch [as] a very clear “acceptance” is completing the tender of a deed by formally taking possession of it, and the script of the usual real estate closing provides for the formal acting out of that mode of “acceptance of deed.”