Undorsement 

Undorsement is the act of paying someone to NOT endorse you or your brand. The opposite of "endorsement"

Wow, The Situation was offered quite an undorsement by Abercrombie & Fitch

Undorsement by TheCompletelySeriousNewsShow August 23, 2011

undorse 

un·dorse /enˈdôrs/ Verb
1. Renege one's public approval or support of.
2. To not recommend (a product) in an advertisement.

Also: Undorsed, Undorsement.

In its latest publicity stunt, the racy teen retailer is offering to pay Mike "The Situation" Sorrentino — the "Jersey Shore" reality show cast member known for showing off his abdominal muscles, to not wear its merchandise. Abercrombie, effectively undorsed The Situation.

undorse by Nabeel S August 21, 2011

Unhorsed

To separate someone from their horse usually forcefully. eg to push someone off of their horse

Diego unhorsed Johnny then turned to him and said “now you’re unhorsed”

Unhorsed by Smiladon_populator August 8, 2022

Undorse 

The act of telling people who NOT to vote for, buy from, or otherwise support.

As a staunch Republican, I will undorse Hillary Clinton in '08.

Undorse by Mandy Connell April 3, 2007

undorsement 

When the brand pays a celebrity to ask them not to use their product for fear that it would tarnish the brand.

Opposite of endorsement.

The Situation received an undorsement when Abercrombie & Fitch offered him "a substantial payment" not to wear its clothes after it revealed it was "deeply concerned" that the 29-year-old "could cause significant damage" to the brand's "aspirational nature".

undorsement by Batman Potato August 25, 2011

Undorsement deal

When a lifestyle brand offers a celebrity money not to be associated with their brand or products.

The fashion world was abuzz today with news of a potential undorsement deal between lifestyle brand, Abercrombie & Fitch and Jersey Shore's 'The Situation.' Apparently Abercrombie & Fitch has offered 'The Situation' a "considerable" amount of money not to wear their clothes.

Undorsement deal by Manna81 August 22, 2011

undorse 

declare one's public disapproval or fear of.

In the interview the other night, Clinton smuggly undorsed Sanders.

Smug Hillary saw Bill in the White House with the cigar but she didn’t undorse him.

¯\_(ツ)_/¯

undorse by The Dogtor January 23, 2020