gentleman's agreement
US /ˌdʒen.tl.mənz əˈɡriː.mənt/
UK /ˌdʒen.tl.mənz əˈɡriː.mənt/

1.
君子协定, 口头协议
an agreement that is not legally binding but is based on the honor of the parties involved
:
•
They reached a gentleman's agreement to share the profits equally.
他们达成了君子协定,平分利润。
•
The deal was based on a gentleman's agreement, not a written contract.
这笔交易是基于君子协定,而非书面合同。