Oxford Dictionary English gentleman’s agreement noun noun BrE BrE//ˌdʒentlmənz əˈɡriːmənt// ; NAmE NAmE//ˌdʒentlmənz əˈɡriːmənt// (also gentlemen’s agreement) Add to my wordlistjump to other resultsan agreement made between people who trust each other, which is not written down and which has no legal forceCheck pronunciation: gentleman’s agreement oxfordlearnersdictionaries.com