Public (adjective) means relating to all the people in a community or country, or available for anyone to use or see. As a noun, the public refers to ordinary people in general, considered as a whole group.
What Does Public Mean?
Public comes from Latin publicus, meaning "of the people", itself derived from populus (people). It entered English in the 15th century via Old French. The same root gives us republic (from res publica, "public affair"), publish, publication, and publicity.
As an adjective, public describes things that belong to, serve, or are open to all people: public transport, public health, a public park. It can also describe things that are known or visible to everyone, contrasting with private or secret: a public statement, public knowledge.
As a noun, the public means all ordinary people as a group. In British English it can take either a singular or plural verb: "The public is concerned" (one body) or "The public are divided" (treating people individually). Both constructions are standard in British usage.
Note the difference between public and communal (shared by a specific group), national (belonging to a country as a whole), and open (simply not closed). Public specifically emphasises that something involves or is accessible to all people regardless of who they are.
Example Sentences
| Sentence | Level / Usage note |
|---|---|
| The exhibition was free and open to the general public. | A2 — noun; standard phrase |
| We took the public bus to the city centre. | A2 — adjective + noun collocation |
| The new library is a great public building in our town. | B1 — adjective describing a shared resource |
| The minister made a public apology for the mistake. | B2 — adjective meaning "open, visible to all" |
| There has been growing public concern about the long-term effects of the policy on social inequality. | C1 — noun phrase in formal register |
Common Collocations
| Collocation | Meaning / Example |
|---|---|
| public transport | Buses, trains, and other services available to everyone: I usually take public transport to work. |
| general public | All ordinary people: The trial is open to the general public. |
| public sector | Government-run organisations and services: She works in the public sector. |
| public opinion | What most people think about something: Public opinion shifted after the scandal. |
| public health | The health of all people in a society: Smoking is a major public health issue. |
| public holiday | An official day off work for everyone: Christmas Day is a public holiday in the UK. |
| public speaking | Giving a speech to an audience: She took a course to improve her public speaking. |
| public figure | A well-known person in society: Politicians are public figures and face scrutiny. |
| in public | In a place where others can see or hear: He refused to cry in public. |
| go public | Make something known; or list a company on a stock exchange: They decided to go public with the information. |
Usage Notes
Key Points for Learners
"Public school" — a British trap: In British English, a public school is a prestigious private fee-paying school (such as Eton or Harrow). In American English, a public school is a free government-funded school. If you are speaking British English and mean a free state-funded school, say state school.
Adverb form — spelling: The adverb is publicly, not publically. Unlike most adjectives ending in -ic which use -ically (e.g., dramatically), public takes a simple -ly: She publicly denied the rumours.
Singular or plural verb? In British English, the public can take a singular or plural verb depending on whether you treat the group as one unit or as individuals. Both are acceptable: "The public is worried" and "The public are worried" are both correct.
Common Mistakes
Watch Out For
She spoke publically about her experience. (incorrect spelling)
She spoke publicly about her experience. (correct — public + ly, no extra 'a')
I prefer travelling by a public transport. (incorrect — no article with this noun phrase)
I prefer travelling by public transport. (correct — no article needed)
This information is for public's knowledge. (incorrect — do not use possessive apostrophe)
This information is in the public domain. (correct — use the set phrase instead)