Deafie means: An informal, and potentially sensitive, term for a deaf person. Within the Deaf community it can carry an affectionate, in-group quality - a casual shorthand among people who share that experience.. It is generally derogatory or offensive; worth a quiet word about how it lands on the person being described. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.