Downsinking refers to a downward movement or sinking. However, there are many other words that can be used instead of downsinking depending on context. These words include declining, falling, plummeting, slumping, dropping, trailing, plunging, dipping, sagging, and sliding. Each of these words has its own specific connotation, such as plummeting being a sudden and steep drop or slumping being a gradual and prolonged decline. Selecting the appropriate synonym can help to add precision, variety, and nuance to writing and communication.