Illustration of three stylish women holding shopping bags, representing the idiom 'cost an arm and a leg' meaning very expensive

Idiom – Cost An Arm And A Leg

English Idiom – Cost an Arm and a Leg

Meaning – Very expensive.

This expression is used when something costs a lot of money — an expensive item, or something you feel you paid too much for. You wouldn’t really give up an arm and a leg for any amount of money, so the phrase captures just how steep the price feels.

Example“I don’t want to spend an arm and a leg on a new car!”

A related variation: “I’d give my right arm for (something)” — used when you want something very badly, rather than describing a price. “I’d give my right arm for a brand new bimmer!”

When could you use this idiom?

  • You’ve spent too much money on something fancy or luxurious.
  • Your holiday turned out to be very expensive.
  • You see someone with a flashy new car or a new house.
  • A friend shows you their engagement ring: “It must have cost my boyfriend an arm and a leg!”

Did you know? Despite a popular story linking this phrase to soldiers who lost limbs in World War II, most etymologists consider that origin unverified — it’s a good story, but not a documented one. The phrase’s first solid appearances in print are American, from the years just after the war, but its real origin is simpler: it’s a vivid exaggeration, in the same playful tradition as “I’d give my right arm for…”

Similar idioms:

What is an idiom?

An idiom is a word or phrase that is not taken literally.  An idiom is an expression that cannot be understood from the meanings of its individual words, but has a separate meaning of its own.

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