What’s the opposite of busy?
So, the situation is the following: my girlfriend says she will be busy for some time. So I want to say: "message me when you get free/become unbusy/get unoccupied, please"
What’s the right and natural way to say it? All of these variants sound a bit strange, though I am used to saying "when you get free".

Question

Answer

I am a Native English speaker and "when you're free" is exactly what I would say.
"When things slow down" is another alternative that I would use.

Some opposites (antonyms) of busy are;
"Idle" (Does not work for this one)
"inactive" (Does not work for this one)
"Unoccupied" (Works, but not natural)

Antonyms are words that are complete/total opposites of other words.

Answer

Message me when you can.
Message me when you are able.
Message me when you are free.
Message me when you have time.

Não perca a oportunidade de aprender uma língua no conforto da sua casa. Navegue pela nossa seleção de professores de línguas experientes e inscreva-se na sua primeira aula agora mesmo!