Question

Jesse doesn't like his coworker mila. One day, he sees her at the supermarket and tries to say, "Glad to run into you." Instead, he accidentally says, "Sad to run into you," which reveals his true feelings to Mila. What is the name for this unconscious slip of the tongue?

Answer 1

That's called a "Freudian slip" — technically a lapsus linguae (a slip of the tongue) or more generally a parapraxis. In psychoanalytic terms it’s an unconscious thought (here, dislike) leaking out in speech.