The antonyms for "giving a lift" include "dropping off," "leaving behind," "abandoning," "ignoring," and "rejecting." Instead of providing transportation to someone, dropping off refers to leaving them at their intended destination without any further assistance. Leaving behind and abandoning imply intentionally deserting someone in need of help. Ignoring refers to the act of not acknowledging someone's request for assistance or support. Rejecting means refusing to offer help, aid, or support to someone in need. These antonyms highlight the opposite actions one can take instead of helping someone by giving them a lift.