lastingunion

noun
UK /ˈlɑːstɪŋ ˈjuːnjən/
US /ˈlæstɪŋ ˈjuːnjən/

A lasting union is a group of people who stay together for a very long time.

Their marriage became a lasting union built on trust and kindness.


OTHER MEANINGS

2. A formal agreement between groups that is meant to continue for a long time.

The two countries signed a lasting union to keep peace between them.

3. A close connection between people that does not break easily.

The lasting union of the teammates helped them win many games.

4. A joining of two things that stays strong over time.

The lasting union of wood and glue made the chair very strong.