An adaptive compliant wing is a type of wing that can change its shape during flight to increase efficiency. Some synonyms for adaptive compliant wing include morphing wing, shape-changing wing, flexible wing, and compliant wing. These terms all refer to the same concept of a wing that can adapt to different flight conditions. Other related terms include variable geometry wing and folding wing. The development of these types of wings is an important area of research in the aviation industry as they have the potential to improve aircraft performance and reduce fuel consumption.