tie the knot
Definitions
To get married.
To enter into a formal or legal marital union.
Examples
After dating for five years, they finally decided to tie the knot in a small beach ceremony.
Many couples choose to tie the knot during the spring when the weather is mild and pleasant.
They kept their plans secret and decided to tie the knot at the local courthouse without telling anyone.
Synonyms
get married wed marry walk down the aisle become husband and wife exchange vows take the plunge
Antonyms
divorce separate split up break up annul dissolve a marriage part ways