The antonyms for the word "up rearing" are "down" and "lowering". While the term "up rearing" signifies an upward and optimistic movement or growth, "down" and "lowering" refer to a downward movement or decline. When a business is up-rearing, it means it is growing, prospering, or experiencing success. Conversely, when a business is lowering, it is experiencing a decrease in profits or performance. Similarly, up-rearing can be associated with positive emotions and feelings, while lowering is associated with negative emotions and feelings. Overall, these antonyms reveal the contrasting nature of upward and downward movements and their impact on different aspects of our lives.