The antonyms for the phrase "doing a take off" would be "landing," "touching down," and "arriving." These words refer to the opposite action of taking off, where an aircraft would be lowering onto the runway instead of ascending into the air. Other antonyms that can be used include "staying put," "remaining stationary," or "docking." In a broader sense, the phrase can also be interpreted as starting something new or making a fresh start, and antonyms for this idea would include "retaining," "maintaining," or "continuing." These words indicate the act of keeping things as they are instead of beginning a new venture or endeavor.