uncountable noun Finality is the quality of being final and impossible to change. If you say something with finality, you say it in a way that shows that you have made up your mind about something and do not want to discuss it further. [formal] [+ of] ⇒ Young children have difficulty grasping the finality of death. ⇒ 'Not this time, Faye,' he replied with finality.
COBUILD Advanced English Dictionary. Copyright © Harper Collins Publishers