The full idiom is "Free things can be very expensive". An idiom is a turn of phrase that seems to mean nothing, but requires thought to unravel. The reason free things can be expensive, is that they're generally free because they're not very useful.
No, an idiom is a phrase that makes no sense unless you know the definition. This makes perfect sense, so it's not an idiom. It is a proverb teaching you to do things when the time is right and not wait.
Change in this context means the money that is left after you buy something. A chunk is another term for a thick, solid amount of something.This idiom means a large amount of money.
This isn't an idiom because you can figure out what it means pretty easily. It's an exaggeration - pretending that your money is so eager to leave your pocket that it can burn a hole to get out.
You might say you were "caught short" if you didn't have enough to pay for something. You could say that you only earn "chicken feed" if you don't make much. You could be "down and out" if you have nothing.
This means that she can't wait to spend the money she has.
This is not an idiom that I have ever heard. Perhaps you mean an arm AND a leg, which is an exaggerated way of saying something is really expensive.
more then you could give or pay then priceless bodily limbs, that are expensive on black market"An arm and a leg" is an idiom that means an exorbitant or very high price paid for something. "Jeeze, did you see that they're charging an arm and a leg for a gallon of gas these days!"
An idiom is an expression that has a meaning different from what it literally says. For example, one can say that something expensive costs an arm and a leg, although clearly the point made is different from what the individual words mean.
That's not an idiom. Keeping a matter secret means not letting anyone know about it.
It depends on how you use it. If you mean literal colors, then it's not an idiom. If you say something like "It's all there in black and white," then it's an idiom meaning that something is printed.
Does it make sense if you translate it literally? If it does, it's not an idiom. Have you ever seen anyone actually hit a ceiling? No, so this must be an idiom.
anybody's guess
You can guarantee something.
to ignore something
When an idiom is used to compare something, it means that the idiom is being used metaphorically to illustrate a point or convey a particular meaning. The comparison helps to create a vivid image or analogy that enhances the understanding of the intended message.
It's not an idiom - it means a cup with some tea in it. NOT your cup of tea, however, is an idiom - it means that something is not to your liking or preference.
The idiom, "spice of life", means that you can do something to make your life more exciting. Do something that's daring, challenging, fun; something that's worth living for.