Factive
/ˈfæktɪv/
Definition 1 of 1
Pro Tip 1/3Not Always True
Factive verbs presume truth, but the actual truth can be subjective or uncertain. 
She regrets that it happened, but it might not have actually happened.
Pro Tip 2/3Common Factive Verbs
Some common factive verbs include 'know', 'realize', 'learn', and 'understand'. 
I realized that the store was closed.
Pro Tip 3/3Imply Certainty
Using factive verbs indicates you're certain about the information following them. 
He knows that you are the winner.