What part of speech is “one”

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the word 'one' can be used as a noun to refer to a single person, object, or idea. It is often used to express one's identity by saying things like 'I am one of a kind' or to explain a certain number or value, such as 'one hundred dollars', or to refer generally to something, as in 'he had only one responsibility.'

rules and use cases for the word when used as a noun include the general use case of referring to a single person or thing or number. For example, when writing a sentence about counting, you may use the word 'one' as a determiner.

1. The number one symbolizes unity.

2. He only wanted one cookie.

3. Can I get one refill, please?

when using this word as a noun, be mindful of translating it to other languages. In Spanish, the word 'uno' is used for singular nouns and 'un' is used for plural nouns. Additionally, it's important to remember to use the correct verb tense in the sentence when referring to 'one'. Common mistakes when using 'one' as a noun include using it with plural verbs ('one have' or 'one are') as well as confusing 'one' with other indefinite articles such as 'it' or 'this'.


one is an adjective used to refer to something that is singular, unique, or the only one of its kind. It is used to describe individual items that are distinct from a group and is often used to create emphasis.

rules associated with the use of one as an adjective include that it must come before the noun it modifies and never after.

1. Across the field was one small flower, standing out from the rest.

2. I'm looking for one simple dress for the upcoming event.

3. He is the one person that I trust the most.

when using one to emphasize uniqueness, it should not be used with comparative words such as more or less.


as a pronoun, 'one' is used to refer to an unspecified person or people in general, often to represent a typical member of a group or class. It can also refer back to a previously mentioned noun. 'One' can be used to make general statements or to indicate what is typically done. 'One' can be used to avoid repetition.

1. One should always tell the truth.

2. I'd like an apple. Do you have a ripe one?

3. One can see the influence of classical architecture in the building's design.

when using one as a pronoun to denote a person, it may be perceived as impersonal or rude, so if referring to a person it is best to use their name or another personal pronoun, such as he/she.

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