Here is a list of common idiomatic expressions in English.
Eat humble pie
To eat humble pie is to apologize humbly.
Eat your words
To eat your words is to retract something you have said.
Meet someone halfway
To meet someone halfway is to come to a compromise with them.
Meet trouble half-way
To meet trouble halfway is to worry about it even before it comes.
Put someone on their mettle
To put someone on their mettle is to encourage them to do their best.
Not worth their salt
If somebody is not worth their salt, they are worthless.
Set your face against somebody/something
To set your face against somebody or something is to oppose them sternly.
Be within an ace of
If you are within an ace of something, you are on the brink of it.
Lose ground
If something is losing ground, it is becoming less acceptable or powerful.
With open arms
To receive someone with open arms is to give them a warm welcome.
Play fast and loose
To play fast and loose is to say one thing and do another.
Take someone to task
To take someone to task is to rebuke them.
Turn a deaf ear
To turn a deaf ear to something is to disregard it.
Hold water
If something holds water, it stands scrutiny.
By hook or by crook
To achieve something by hook or by crook is to do it by fair means or foul means.