Antonyms for "give a lift" could include options such as "hold back," "block," "hinder," or "obstruct." These antonyms suggest preventing or hindering someone from getting a lift or ride to their destination. Other antonyms might include "ignore," "neglect," or "abandon," which depict a lack of willingness to help someone in need of transportation. However, it's important to note that the concept of giving someone a lift inherently implies a level of kindness and generosity, so many antonyms may seem harsh or negative when compared to the positive nature of the original phrase.