one-to-one

American  

[wuhn-tuh-wuhn] / ˈwʌn təˈwʌn /

adjective

1. Also (of the relationship between two or more groups of things) corresponding element by element.

2. one-on-one.

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one-to-one British  

adjective

1. (of two or more things) corresponding exactly

2. denoting a relationship or encounter in which someone is involved with only one other person

   one-to-one tuition

3. maths characterized by or involving the pairing of each member of one set with only one member of another set, without remainder

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noun

1. a conversation, encounter, or relationship between two people

Etymology

Origin of one-to-one

First recorded in 1870–75

Compare meaning

How does one-to-one compare to similar and commonly confused words? Explore the most common comparisons:

• onto vs. one-to-one

Example Sentences

"If young children are spoken to one-to-one and people show them interesting things, that develops the seeking system to make them explore and make the most of the world around them," Cooper said.

From BBC

On the morning of 16 October 2024, she became increasingly distressed and was placed on a high level of one-to-one observations.

From BBC

The use of one-to-one devices is left to the discretion of each school.

From Los Angeles Times

It then made her an appointment for a one-to-one interview, with a real person.

From BBC

“I know there is some complicated mathematical equation that figures that out, but no, I don’t think it’s a one-to-one ratio thing. We can ask after this is all over.”

From Literature