The antonyms for the word "crash land" are "smooth landing," "soft landing," and "controlled landing." These terms are used to describe a landing in which an aircraft or a spacecraft touches down on the ground or another surface without causing any damage or chaos. A smooth landing is one that proceeds without any bumps or shakes, while a soft landing refers to one where the touchdown is gentle and delicate. A controlled landing involves a pilot consciously slowing down and maneuvering an aircraft to land in a specific location. In contrast, "crash land" is associated with an accident or emergency landing where the aircraft comes down forcefully and uncontrollably.