common
A2Pronunciation
UK
- /kˈɒmən/
US
- /ˈkɑmən/
Description
- ordinary
- usual
- widespread
- shared
"Common" describes something that happens often, is found in many places, or is shared by many people. It's the opposite of rare or unique. Think about the common cold—it isn't fun, but almost everyone catches it at some point. Or consider a "common area" in an apartment building: a space shared by all residents.
You might talk about "common sense," meaning the basic, practical judgment many people agree on. Sometimes, "common" refers to something belonging to the public rather than to one person—like a common pasture where everyone's animals could graze. It's a word that points to what many people share, whether it's experiences, habits, or resources.
The word "common" has several interconnected meanings, all revolving around the idea of widespread existence or shared characteristics. At its core, "common" means ordinary, usual, or frequently encountered—something not remarkable for being rare. For example: "Dandelions are a common weed in many gardens," or "It's common to feel nervous before a big presentation."
"Common" also describes things that belong to everyone or are accessible to all. A "common area" in an office building is a space shared by employees, just as historically, "common land" was open for public use. This sense of shared ownership extends to social concepts like "common courtesy," which refers to the polite behavior expected from everyone.
In grammar, a "common noun" is a general name for a person, place, or thing (like "city" or "dog"), not a specific name (like "Paris" or "Rover"). In math and everyday speech, "common" can also mean "shared," as in "a common denominator."
Sometimes, "common" can be insulting: it can suggest someone is rude, coarse, or not well-mannered. This meaning depends a lot on tone and context.
Finally, the word is used in the phrase "in common," meaning shared interests or characteristics: "We have a lot in common—we both love hiking and reading." It can also describe an event as ordinary: "It's just a common occurrence." Whether describing what happens often, what is shared, or what is ordinary, "common" points to what many people experience.
Examples
- 1
Illness
Colds are common in winter.
- 2
Children
It’s common for young children to ask a lot of questions.
Pattern
common for + person/group + to do something
often happens with that person or group
- 3
New drivers
This kind of mistake is common among new drivers.
Pattern
common among + group
often seen in that group
- 4
Illness term
The common cold usually goes away on its own.
Phrase
the common cold
a very usual mild illness
- 5
Shared interests
A love of music is something the two sisters have in common.
Pattern
have X in common
share the same interest, quality, or experience
- 6
Social comparison
We don’t have much in common, so conversation is sometimes difficult.
- 7
Practical judgment
She argued that it was just common sense to back up your files.
Phrase
common sense
basic practical judgment
- 8
Shared needs
A need for safety is common to people of all ages.
Pattern
common to + group
shared by all the people or things mentioned
- 9
Agreement
After a long discussion, the two sides finally found some common ground.
Phrase
common ground
ideas or interests both sides can accept
Forms and spellings
4 forms open this card.
Main spelling
- commonnounadjective
Forms
- commonspluralnounadjective
- commonercomparativeadjectivenoun
- commonestsuperlativeadjectivenoun