Finality (noun)

1. The condition of being definite and settled, often implying permanence.
2. The quality of being decisive or conclusive.

Origin:

From latin word 'finalis' meaning 'relating to an end or a finish'.

Examples:

1. The finality of death is a difficult concept for many to grasp.
2. The court's decision was handed down with finality, leaving no room for appeal.
3. The finality of the situation was evident by the look of resignation on her face.
4. The finality of their breakup was a shock to their close-knit group of friends.
5. The finality of his decision to retire was met with mixed emotions by his colleagues.