An idiom is a word or phrase that is not taken literally, like “bought the farm” has nothing to do with purchasing real estate, but refers to dying.
Idiom also refers to a dialect or jargon of a group of people, either in a certain region or a group with common interests, like in science, music, art, or business.
Some idioms are used by most people that speak English; others are used by a more select group.
Common idioms that refer to people include:
- A chip on your shoulder - means you are holding a grudge
- High as a kite - means you are drunk or on drugs
- Sick as a dog - means you are very ill
- Rub someone the wrong way - meaning to annoy or bother
- Jump the gun - would mean to be doing something early
- Pay the piper - means you need to face the consequences of your actions
For example, there are several that use the word “blue:”
“The blues” can refer to both a style of music and feeling sad. If something occurs rarely, it is said to happen “once in a blue moon”, because a blue moon is two full moons in one month, which doesn’t happen often. “Out of the blue” means something happens that was unexpected.