To put your feet up is to sit back and rest properly. Go and put your feet up.
It is what people are told to do after a long day or an illness. To put your feet up genuinely helps swollen ankles, which is where the phrase started.
1phraseput your feet upTo sit back and rest properly.
“Put your feet up and let somebody else do the dishes.”
put your feet up is a phrase.
Practised in Idioms