go down
phr. v..phr. v.. To become lower, less, or smaller. You can use it for prices, temperatures, or even the sun in the sky.
phr. v.. An intransitive phrasal verb meaning to decrease in level, amount, or value; also, to set (referring to the sun).
The price of fuel is going down.
We watched the sun go down over the ocean from our hotel balcony.
Despite initial optimism, consumer confidence has continued to go down, prompting concerns about a wider economic recession.
Often used to describe prices, temperatures, levels, or the sun setting.
Contrast with 'go up' (increase); introduce the core meaning of 'decrease' first before exploring other senses like the sun setting or a system failing.
The shop went down the prices.The prices went down.'Go down' is intransitive when it means 'decrease'; it describes something happening and does not take a direct object.