unbreakablepact

noun
UK /ʌnˈbreɪkəbəl pækt/
US /ʌnˈbreɪkəbəl pækt/

A promise that can never be broken.

The two friends made an unbreakablepact to always help each other.


OTHER MEANINGS

2. A formal agreement that cannot be canceled or changed.

The kingdoms signed an unbreakablepact to keep peace for a hundred years.

3. A deep bond between people that nothing can destroy.

Their unbreakablepact survived every argument and every long separation.

4. A magical promise that stays in force forever.

In the story, the wizard cast an unbreakablepact that even he could not undo.