Mum's the word.

The meaning of the idiom is, " To say nothing. To keep quiet ".

The monkeys were making a lot of noise,

which was irritating the demon who lived under the water.

He finally could take it no more, so he came out and shouted " Mum's the word!"

Mum's the word.

The meaning of the idiom is, " To say nothing, to keep quiet."

Under the weather.

Means feeling unwell or sick.

Johnny, a naughty little kid, never listens to his mother.

He played in the rain and was feeling under the weather.

So his mom called the doctor.

Under the weather.

Means feeling unwell or sick.

Catch red-handed.

Means to catch someone in the act of doing something wrong.

The robbers were caught red-handed

when they were stealing all the jewelry from the king 's palace.

Catch red-handed.

Means to catch someone in the act of doing something wrong.

Cost an arm and a leg.

The meaning is, " expensive, costs too much money ".

John 's father paid an arm and a leg for his car and he loves driving it.

Cost an arm and a leg.

The meaning is, " expensive, costs too much money ".

Fingers crossed.

Means, " Hope or wish for good luck ".

Ram kept his fingers crossed before the exam.

Fingers crossed.

Means, " Hope or wish for good luck ".