a storm in a teacup	a lot of unnecessary anger and worry about a matter that is not important
Bob’s your uncle!	"and there it is" or "and there you have it"
as dead as a doornail	very dead
to kick the bucket	to die
everything but the kitchen sink	everything imaginable
The lights are on, but nobody’s home	Used to say that somebody is stupid, even though they look normal
donkey’s years	used to describe an action that has continued for a very long time
to do a runner	to leave a place hastily in order to avoid a difficult or unpleasant situation or to avoid paying fo
nothing to write home about	not very exciting or special
Keep your eyes peeled!	be on the alert; watch carefully or vigilantly for something
to pick someone’s brain	to obtain information by questioning someone who is well informed on that particular subject
to put (the) feelers out	to make informal suggestions as a way of testing people's opinions on something before any decisions
the best thing since sliced bread	means that something is the best and most useful innovation of recent times
Take a chill pill!	Relax! Calm down!
I’ll show myself out	Used when you have disgraced yourself, to save someone else from having to ‘show you the door
it takes two to tango	actions or communications need more than one person
every cloud has a silver lining	every difficult or sad situation has a comforting or more hopeful aspect
to burn the midnight oil	to work or study late into the night
to burn the candle at both ends	to work or to do sth from very early in the morning to v. late at night, thus, gettin v. little rest
water under the bridge	used to refer to events that are in the past and consequently no longer to be regarded as important
to wear your heart on your sleeve	to openly share your feelings etc
lovely weather for ducks	very wet, rainy weather
to burn your bridges	the act of unpleasently and permanently ending relations with another person, or an organization
variety is the spice of life	new and exciting experiences make life more interesting
to lend an ear	to listen to sb with sympathy
a change of heart	a move to a different optinion attitude
to touch someone's heart	to make sb feel a particular emotion or strong feeling
to take one's breath away	if you say that, you are emphasizing that it is extremely beautiful or amazing
the calm before the storm	a period of unusual peace and tranquillity that seems to come before more difficult or chaotic times
to spread one's wings	to become more independent and confident and to try new things
those three little words	an indirect way to reffering to the words I love you
what comes around goes around	if u treat sb badly, or do sth negative, it is likely that the same thing will come back to haunt u
hook, line and sinker	used to emphasise that sb has been completely deceived or tricked
to have a soft spot for someone	to have a great deal of affection for sb or sth
to only have eyes for someone	to only be attracted to or interested in one person
a drop in the ocean	very small, or insignificant part of sth big or whole
actions speak louder than words	it's better to actually do sth rather than just talk about it
to add fuel to the fire	to make a problem worse
the ball is in your court	it's your turn to make the next step or decision
to bend over backwards	to do whatever it takes to help sb
to bite off more than you can chew	to take on a task that is too big
by the skin of one's teeth	to only just succeed at ath by the narrow margin
to cry wolf	to call for help when you don't need it
to cut somebody some slack	to give sb a break
to cut to the chase	to leave out all the unnecessary details and just get to the point
to get one's head around sth	to come to understand sth
to hear on the grapevine	to hear a rumour or unconfirmed story
to miss the boat	to miss the opportunity to do sth
a piece of cake	really easy
pull yourself together	calm down and act normally
to sit/ to be on the fence	to stay neutral and not take sides
to step up one's game	to start performing better
to sell someone out	to snitch on sb or let their secret out
your guess is as good as mine	i don't know/ i have no idea
a blessing in disguise	a good thing that seemd bad at first
a picture is worth 1000 words	a picture tells a story just as well as, if not better than, written words
add insult to injury	to act in a way that makes a bad situation worse
as cheap as chips	really cheap
barking up the wrong tree	to be wrong about the way to achieve ath or the reason for sth
beat around the bush	avoid saying what you mean, usually because it is uncomfortable
better late than never	it is better to arrive or do sth later than expected than to not arrive or not do sth at all
bite the bullet	to force yourself to do sth unpleasant or difficult, or to be brave in a difficult situation
break a leg	good luck
break the ice	to make people who have not met each other before feel more relaxed and comfortable
to call it a day	to stop what you are doing because you think you have done enough or do not want to do any more
cost an arm and a leg	to be very expensive
cut corners	to do sth in the fastest, easiest or cheapest way
don't give up your day job	used for telling sb that you don't think they're very good at sth
easy does it	used to tell sb
get a taste of your own medicine	get treated
to get out of hand	to become
to get sth out of your system	to get rid of a wish or emotion, espe
to get your act together	to start to
to go back to the drawing boardgood things come to those who wait	be patient
hang in there	said as a way to tell
to hit the nail on the head	to get ath
to hit the sack	to go to bed
ignorance is bliss	you're better off
it's not rocket science	used to say that
to jump on the bandwagon	to join an activity
to keep one's chin up	to keep one's
to kill two birds with one stone	get two
to let someone off the hook	to allow to go
neck of the woods	the area
no pain, no gain	suffering is necessary in order
not one's cup of tea	sb
off the top of one's head	from memory,
on the ball	alert to new ideas