The antonyms for the phrase "climbs upon" can be numerous depending upon the context. Some of the most common antonyms include descend, slide, fall, tumble, drop, descend, descend, lower oneself, move down, or simply stand. These antonyms describe actions that are quite opposite to "climbs upon." They imply a movement towards the ground or a downward motion rather than an upward climb. For instance, someone who is climbing upon a tree would be antonymously described as someone who is falling from the tree or simply standing on the ground. Knowing the antonyms for a certain phrase can help a writer or speaker to convey the exact opposite meaning to the audience.