at the tip of my tongue
I can almost remember it, but not quite
cost an arm and a leg
very expensive; high-priced, though possibly not worth the cost
an old hand at something
a person with a lot of experience in something
to have a shoulder to cry on
someone who gives you sympathy when you are upset
learn sth by heart
to memorize sth
to have cold feet
to hesitate because of fear or uncertainty
a finger in every pie
to be involved in many matters although it is not your business
the wall has ears
be careful when you say sth as other people can hear it as well
many hands make light work
a lot of people helping makes a job easier
to know sth like the back of your hand
to know sth very well
to break one's heart
hurt somebody deeply
to look down your nose at
to feel superior to
to give sy a cold shoulder
to ignore someone
off the top of my head
without thinking about sth carefully
I'm all ears
I'm listening