transitive + intransitive
: to promise more than is possible or realistic
- Political candidates always overpromise or else the electorate won't bother to show up at their rallies.
- —Michael Gomez
- … received sharp criticism for overpromising and underperforming.
- —Industry Week
- Then a change in the Facebook algorithm punished click bait, which can tend to overpromise on what it links to. Steep traffic drops followed.
- —Jim Rutenberg
- To close a deal, bad vendors tend to overpromise features that they claim will be added down the line but never materialize.
- —Michael Kan