›[T]COMMERCEto sell goods for less than someone else or for less than they are really worth: The big chains undersell new releases at first, and then as customers continue to come, they raise the price.The lender got the valuation wrong and undersold the flat.
›[T]MARKETINGto make an idea, product, opportunity, etc., seem less attractive than it really is: undersell yourselfMany candidates undersell themselves when applying for jobs.Our research is of good quality but a little undersold.I don't want to undersell how difficult this is. → Compareoversell
›[I or T]MARKETINGto sell less of something than is available, or less than the real demand for it: I believe this is a market that is seriously undervalued and undersold.They offer a 5% reduction if undersold. → Compareoversell