put your feet up
to relax, especially by sitting with your feet supported on something

[TahlilGaran] Dictionary of Contemporary English ▲

relax to rest or do something that is enjoyable after you have been working:
In the evenings, I like to relax with some music and a nice meal.
In two weeks’ time I’ll be relaxing on a beach in Greece.
rest to stop working or stop being active, and sit down or lie down so that you become less tired:
If you’re tired, we’ll stop and rest for a while.
The doctor told me to take some time off work and try to rest.
unwind to gradually relax after you have been working hard or feeling anxious:
It had been a bad day and he just wanted to get home and unwind.
Set in spectacular countryside, the Shiga Hotel is the perfect place to unwind.
take it/things easy to relax and not do very much, especially after working very hard or being ill:
Now that you’ve finished your exams, you can take it easy.
The doctor said he’ll have to take things easy for while.
put your feet up informal to rest for a short time after a tiring activity, especially by sitting with your feet resting on something:
Kate poured herself a drink and put her feet up.
When you’re pregnant and doing a full-time job, you must find time to put your feet up.
chill out/chill informal to relax completely, or stop worrying and getting annoyed about things - used mainly by young people:
We spent the day chilling out by the pool.
Hey dude, chill out! It’s only a car!
It’s a great place to chill out.
Let’s go back to my place and chill.
loosen up informal to become more relaxed and stop worrying about things:
I keep telling Mum that she needs to loosen up a bit.
Tom had had a few drinks and was beginning to loosen up.
put somebody at ease/make somebody feel at ease to make someone feel relaxed, especially in a situation in which they might feel a little nervous:
A good interviewer will try to make you feel at ease.
His friendly manner always puts people at their ease.

[TahlilGaran] English Thesaurus ▲

rest to stop working or stop being active, and sit down or lie down so that you become less tired:
If you’re tired, we’ll stop and rest for a while.
The doctor told me to take some time off work and try to rest.
take a rest (also have a rest especially British English) to stop what you are doing for a period of time so that you can relax:
Murray will now take a rest before the competition next month.
There was a TV in the hotel room, and sometimes I escaped up there to have a rest.
A spokesman said that the Senator needed to take a rest from the campaign activity.
take a break (also have a break especially British English) to stop what you are doing for a short time, so that you can rest or do something else – often used about stopping a meeting, class etc for a short time:
Is it all right if we have a short break at about 10:30?
I spoke to the actor as he was taking a break from rehearsals.
Let’s take a break now for coffee.
take it easy (also take things easy) to do things gently and with less effort than usual, in order to avoid becoming worried or tired, especially because you are not feeling strong or healthy:
After the operation, she decided to take things easy for a month or two.
I thought I’d take it easy tonight.
put your feet up informal to rest for a short time after a tiring activity, especially by sitting with your feet resting on something:
Kate poured herself a drink and put her feet up.
When you’re pregnant and doing a full-time job, you must find time to put your feet up.
chill/chill out informal to spend time relaxing and doing things that do not need a lot of effort – used by young people:
We chilled out in front of the TV with a couple of beers.
I like chilling with the guys and playing pool or watching movies.

[TahlilGaran] English Thesaurus ▲

put your feet up
put (your) feet up
to relax and do very little.
After working all week, you deserve to put your feet up on the weekend.

Etymology: based on the literal meaning of put your feet up (= to sit with your feet supported above the ground)

[TahlilGaran] English Idioms Dictionary ▲