1. to persuade someone not to buy or accept something; to discourage a purchase or decision
Usage: third person singular present tense of ‘unsell’

Examples

• The salesperson accidentally unsells the car by mentioning all its problems.
• His negative attitude unsells the product to potential customers.
• She unsells herself during job interviews by being too modest.
• The poor presentation unsells the entire proposal.
• He unsells the vacation idea by talking about the high costs.
• The critic’s review unsells the movie to audiences.