The word "de-plane" means to disembark or to exit a plane. Its antonyms, or opposite meanings, would be to board or to embark a plane. These terms describe the act of getting on or entering a plane, as opposed to getting off or exiting it. Other antonyms for "de-plane" include "board the aircraft," "get on the plane," and "step onto the aircraft." These words and phrases are often used in the context of air travel, such as when instructing passengers on when to board or disembark a plane. Knowing the antonyms for "de-plane" can help travelers navigate airports and flights more efficiently.