privateagreement

noun
UK /ˈpraɪvət əˈɡriːmənt/
US /ˈpraɪvət əˈɡriːmənt/

A private agreement is a secret deal that only the people involved know about.

The two neighbors made a private agreement about sharing the fence.


OTHER MEANINGS

2. An agreement between two people or groups that is not shared with the public.

They signed a private agreement to keep the details of the sale quiet.

3. A deal made without lawyers or official papers, based only on trust.

The brothers had a private agreement that whoever needed help would get it.

4. A promise kept between friends that others are not told about.

My best friend and I have a private agreement to always sit together at lunch.