"Downbend" is a verb that means to bend or curve downwards. There are several synonyms for this word, including "dip", "sag", "curve down", "stoop", "bow down", "incline", and "lower". Each of these words carries a slightly different connotation and can be used in a variety of situations. For example, "dip" might be used to describe the movement of a boat in the water, while "sag" might be used to describe a heavy piece of furniture that has shifted over time. Overall, the use of synonyms can help to add variety and nuance to writing, allowing the writer to communicate their ideas with precision and clarity.