Idioms Beginning With Letter B

Here is a list of idioms and expressions beginning with the letter B. Each idiom is followed by its meaning or definition. Example sentences are also given.

Babe in arms

The expression babe in arms is used to refer to a very young child or someone who is incapable of holding an important position.

Babe in the woods

The expression babe in the woods is used to refer to a naïve or innocent person.

Baby boomer

This expression is used in American English to refer to a person who was born after the Second World War when the population was growing at a fast pace.

Back burner

If an issue is put on the back burner, it is getting very low priority.

Back foot

This expression is mainly used in British English. When you are on the back foot, you are at a disadvantage.

Back number

If something is referred to as a back number, it is dated or out of fashion.

Back the wrong horse

To back the wrong horse is to support a losing side.

Back to back

When things happen back to back, they happen directly after one another.

Back to square one

If you are back to square one, you have to start from the beginning again.

Back to the wall

When you have your back to the wall, you are in a very difficult situation.

Backseat driver

A backseat driver is a person who gives unsolicited advice.

Bad apple

This expression is used to refer to a bad person who makes others bad.

Bad blood

If there is bad blood between people they hate one another because of something that happened in the past.

Bad egg

A bad egg is a person who cannot be trusted.

Bad mouth

When you are bad mouthing somebody you are saying negative things about them.

Bad shape

If something is in bad shape, it is in a very bad condition. If somebody is in bad shape, they are very ill.

Bad taste in your mouth

If something leaves a bad taste in your mouth, you feel that there is something wrong with it.