Definitions

1. verb

to give support or approval to something before it has been officially endorsed or accepted

“The politician preendorsed the new policy, indicating her support for it.”

2. verb

to express approval or support for something before it has been officially endorsed or accepted

“The celebrity preendorsed the charity event, bringing attention to its cause.”

3. noun

an expression of support or approval for something before it has been officially endorsed or accepted

“The preendorsement of the new product helped increase its sales.”