on a need-to-know basis

/ˌɒn ɐ nˈiːdtənˈəʊ bˈeɪsɪs/

/ˌɑːn ɐ nˈiːdtənˈoʊ bˈeɪsɪs/

[phrase]

[PHRASE]

telling others only what they need to know and only at the right time

What is the origin of the idiom "on a need-to-know basis" and when to use it?

The origin of the idiom "on a need-to-know basis" is rooted in military and intelligence contexts. It emerged during the mid-20th century and was initially used to describe the practice of restricting information distribution within these organizations. The principle was that individuals were only provided with information essential to their specific duties or tasks, ensuring that sensitive information was not unnecessarily disclosed. This expression is commonly used in both formal and informal contexts to describe the practice of sharing information selectively and confidentially. It implies that not everyone is entitled to know certain details and that information is provided on a case-by-case basis based on relevance or necessity.

Examples

1. The HR department only shared the employee's personal information on a need-to-know basis.

2. The military operates on a need-to-know basis to ensure classified information is kept confidential.

3. Who I am is on a need-to-know basis.

4. I don't know-- a pandemic, you should put yourself on a need-to-know basis.