— factivity , n.
/fak"tiv/ , Ling.
adj.
1. (of a verb, adjective, or noun phrase) presupposing the truth of an embedded sentence that serves as complement, as realize in I didn't realize that he had left, which presupposes that it is true that he had left.
n.
2. a factive expression.
[ 1605-15; FACT + -IVE ]