English definition of “go down”
go down — Phrasal Verb with go
/ɡəʊ/ verb (going, went, gone)
B1 to become lower in level: Profits have gone down by about 2 percent. Food prices have gone down recently.
B1 When the sun goes down, it moves down in the sky until it cannot be seen any more: I sat on the beach and watched the sun go down.