Unalterable
Part of speech: adjective
Definition: incapable of changing or being altered irrevocable or irreversible
Final
Part of speech: noun
Definition: The ending, the last.A final examination; a test or examination given at the end of a term or class; the test that concludes a class.The last round, game or match in a contest, after which the winner is determined.A contest that narrows a field of contestants (finalists) to ranked positions, usually in numbered places (1st place/prize, 2nd place/prize, etc.) or a winner and numbered runners-up (1st runner-up, etc.).
Part of speech: adjective
Definition: last; ultimate (e.g. final solution)word-final, occurring at the end of a word.
Example sentence: Personally, I've learned about perseverance: when you hear the word 'No,' and when you hear rejection, that it's not always final. And that timing is everything, and you have to stay the course and just keep working hard and know that, when your time comes, that it will be sweet and that it will be the perfect time.