on a need-to-know basis
If you tell people something on a need-to-know basis, you only tell them the facts they need to know at the time they need to know them, and nothing more.
Thesaurus: synonyms and related words
Essential or necessary
- a man's gotta do what a man's gotta do idiom
- basically
- basis
- be a question of doing sth idiom
- business-critical
- dependence
- if/when push comes to shove idiom
- imply
- incumbent
- indispensable
- inherent
- integral
- need
- needed
- needful
- occasion
- owe
- owe it to yourself idiom
- underlying
- warrant
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