Crashlanding is a term used to describe an emergency landing of an aircraft or space vehicle in which the pilot loses control and crashes the vehicle. The term implies a sudden and unplanned descent of the vehicle. Antonyms for the word "crashland" would be controlled landing, soft landing, safe landing, and smooth landing. These words suggest a safe and planned descent of an aircraft or space vehicle without causing any harm to the passengers or crew. In conclusion, antonyms for "crashland" are associated with a carefully planned and safe landing that avoids any crash or emergency situations.