An idiom is a phrase where the words together have a meaning that is different from the dictionary definitions of the individual words, which can make idioms hard for learners to understand.

"A bird In the hand is worth two in the bush" - Having something that is certain is much better than taking a risk for more, because chances are you might lose everything.

"A penny saved is a penny earned" - By not spending money, you are saving money (little by little).

"A piece of cake" - A task that can be accomplished very easily.

"Add fuel to the fire" - Whenever something is done to make a bad situation even worse than it is.

"Against the clock" - Rushed and short on time.

"All in the same boat" - When everyone is facing the same challenges.

"Apple of my eye" - Someone who is cherished above all others.

"At the drop of a hat" - Willing to do something immediately.

"Back to square one" - Having to start all over again.

"Barking up the wrong tree" - A mistake made in something you are trying to achieve.

"Beat a dead horse" - To force an issue that has already ended.

"Beating around the bush" - Avoiding the main topic; not speaking directly about the issue.

"Bend over backwards" - Do whatever it takes to help.

"Bite off more than you can chew" - To take on a task that is very big.

"Bite your tongue" - To avoid talking.

"Blue moon" - A rare event or occurrence.

"Cock and bull story" - An unbelievable tale.

"Cross your fingers" - To hope that something happens the way you want it to.

"Cry wolf" - Intentionally raise a false alarm.

"Curiosity killed the cat" - Being inquisitive can lead you into a dangerous situation.

"Cut to the chase" - Leave out all the unnecessary details and just get to the point.

"Dead ringer" - 100% identical; a duplicate.

"Devil's advocate" - Someone who takes a position for the sake of argument without believing in that particular side of the argument. It can also mean one who presents a counter argument for a position they do believe in, to another debater.

"Don't count your chickens before they hatch" - Don't rely on it until your sure of it.

"Don't put all your eggs in one basket" - Do not put all your resources in one possibility.

"Drink like a fish" - To drink a lot.

"Drive someone up the wall" - To irritate or annoy very much.

"Dropping like flies" - A large number of people either falling ill or dying.

"Elvis has left the building" - The show has come to an end; it's all over.

"Every cloud has a silver lining" - Be optimistic, even difficult times will lead to better days.

"Everything but the kitchen sink" - Almost everything and anything has been included.

"Excuse my French" - Forgive a person for saying words which are not polite because he/she is angry.

"Field day" - An enjoyable day or circumstance.

"Finding your feet" - To become more comfortable in whatever you are doing.

"Finger lickin' good" - A very tasty food or meal.

"Fixed in your ways" - Not willing or wanting to change from your normal way of doing something.

"Flea market" - A place where people gather to buy and sell inexpensive goods.

"Flip the bird" - To raise your middle finger at someone.

"French kiss" - An open mouth kiss where tongues touch.

"From rags to riches" - To go from being very poor to being very wealthy.

"Full Monty" - It can mean either, "the whole thing" or "completely nude".

"Get over it" - To move beyond something that is bothering you.

"Get up on the wrong side of the bed" - Someone who is having a horrible day.

"Get your walking papers" - Get fired from a job.

"Go down like a lead balloon" - To be received badly by an audience.

"Go out on a limb" - Put yourself in a tough position in order to support
someone/something.

"Go the extra mile" - Going above and beyond whatever is required for the task at hand.

"Good Samaritan" - Someone who helps others when they are in need, with no discussion for compensation, and no thought of a reward.

"Great minds think alike" - Intelligent people think like each other.

"Haste makes waste" - Quickly doing things results in a poor ending.

"He lost his head" - Angry and overcome by emotions.

"Head over heels" - Very excited or joyful, especially when in love.

"High five" - Slapping palms above each others heads as celebration gesture.

"Hit the books" - To study, especially for an exam or test.

"Hit the nail on the head" - Do something exactly right or say something exactly right.

"Hold your horses" - Be patient.

"Icing on the cake" - When you already have it good and get something on top of what you already have.

"If it's not one thing, it's another" - When one thing goes wrong, then another, and another...

"In the buff" - Nude.

"In the heat of the moment" - Overwhelmed by what is happening in the moment.

"In your face" - An aggressive and bold confrontation.

"It takes two to tango" - A two person conflict where both people are at fault.

"It's a small world" - You frequently see the same people in different places.

"Jaywalk" - Crossing the street (from the middle) without using the crosswalk.

"Joshing me" - Tricking me.

"Keep an eye on him" - You should carefully watch him.

"Keep body and soul together" - To earn a sufficient amount of money in order to keep yourself alive .

"Kick the bucket" - Die.

"Knee jerk reaction" - A quick and automatic response.

"Knock on wood" - Knuckle tapping on wood in order to avoid some bad luck.

"Know the ropes" - To understand the details.

"Last but not least" - An introduction phrase to let the audience know that the last person mentioned is no less important than those introduced before him/her.

"Lend me your ear" - To politely ask for someone's full attention.

"Let sleeping dogs lie" - To avoid restarting a conflict.

"Let the cat out of the bag" - To share a secret that wasn't supposed to be shared.

"Make no bones about" - To state a fact so there are no doubts or objections.

"Mumbo Jumbo" - Nonsense or meaningless speech.

"Nest egg" - Savings set aside for future use.

"Never bite the hand that feeds you" - Don't hurt anyone that helps you.

"New kid on the block" - Somebody new to the group or area.

"New York minute" - A minute that seems to go by quickly, especially in a fast paced environment.

"No dice" - To not accept a proposition; to not agree.

"Off the hook" - No longer have to deal with a tough situation.

"Off the record" - Something said in confidence that the one speaking doesn't want attributed to him/her.

"On pins and needles" - Anxious or nervous, especially in anticipation of something.

"On the fence" - Undecided.

"Out of the blue" - Something that suddenly and unexpectedly occurs.

"Out on a limb" - When a person puts herself in a risky situation.

"Over my dead body" - When you absolutely will not allow something to happen.

"Over the top" - Very excessive.

"Pass the buck" - Avoid responsibility by giving it to someone else.

"Pick up your ears" - To listen very carefully.

"Pig in a poke" - A deal that is made without first examining it.

"Practice makes perfect" - By constantly practicing, you will become better.

"Pull the plug" - To stop something; to bring something to an end.

"Pulling your leg" - Tricking someone as a joke.

"Put a sock in it" - To tell noisy person or a group to be quiet.

"Raining cats and dogs" - A very loud and noisy rain storm.

"Rise and shine" - Time to get out of bed and get ready for work/school.

"Rome was not built in one day" - If you want something to be completely properly, then it's going to take time.

"Saved by the bell" - Saved at the last possible moment.

"Scot-free" - To escape and not have to pay.

"Sick as a dog" - To be very sick (with a cold or the flu).

"Sixth sense" - A paranormal sense that allows you to communicate with the dead.

"Skid row" - The rundown area of a city where the homeless and drug users live.

"Smell a rat" - To detect someone in the group is betraying the others.

"Smell something fishy" - Detecting that something isn't right and there might be a reason for it.

"The ball is in your court" - It is your decision this time.

"The best of both worlds" - There are two choices and you have them both.

"The bigger they are the harder they fall" - While the bigger and stronger opponent might be a lot more difficult to beat, when you do they suffer a much bigger loss.

"Tie the knot" - To get married.

"To make a long story short" - Something someone would say during a long and boring story in order to keep his/her audience from losing attention.

"Under the weather" - Feeling ill or sick.

"Use your loaf" - Use your head; think smart.

"Water under the bridge" - Anything from the past that isn't important or significant anymore.

"Wear your heart on your sleeve" - To openly and freely express your emotions.

"When it rains, it pours" - Since it rarely rains, when it does it will be a huge storm.

"When pigs fly" - Something that will never ever happen.

"Without a doubt" - For certain.

"You are what you eat" - In order to stay healthy you must eat healthy foods.

"You can't judge a book by its cover" - Decisions shouldn't be made primarily on appearance.

"Zero tolerance" - No crime or law breaking big or small will be overlook.