a speech disturbance in which conventional words are used in unconventional or inappropriate ways (as in metonymy), or new but understandable words are constructed out of ordinary words (e.g., easify for simplify).
1. a person or object that substitutes for the role of an individual who has a significant position in a family or group. See father surrogate; mother surrogate.
2. more generally, any person or entity that substitutes for another.