The word "takeoffed" is not a standard English word and is not found in most dictionaries. As a result, there is no set of clearly defined antonyms for this word. However, if we consider the word "takeoff" (without the added "ed"), we can suggest a few possible antonyms. The opposite of taking off could be landing, descending, or coming down. Other antonyms might include stopping, ceasing, or halting. It's worth noting that the word "takeoffed" is likely a non-standard, colloquial expression used in certain regions or contexts. As such, its use and antonyms may vary widely.