Ratify (verb)

1. To approve or confirm something officially.
2. To give formal assent to.

Origin:

The word "ratify" is derived from the latin word "ratificare" which means "to make valid or confirm". it is to approve or confirm something officially.

Examples:

1. The treaty was ratified by the senate.
2. The union voted to ratify the new contract.
3. The company's board of directors ratified the merger.
4. The amendment was ratified by the necessary number of states.
5. The government ratified the international agreement on climate change.