ironclad agreement
noun phraseUK /ˈaɪənklæd əˈɡriːmənt/
US /ˈaɪərnklæd əˈɡriːmənt/
A promise that is so strong nobody can break it.
The two friends made an ironclad agreement to always share their toys.
RELATED WORDS
OTHER MEANINGS
2. A legal contract that is very hard to change or cancel.
The company signed an ironclad agreement with its suppliers.
3. A deal that has no loopholes or weak points.
Their ironclad agreement left no room for excuses.
4. A strong, unbreakable understanding between two people or groups.
The teammates had an ironclad agreement to support each other.