Undeniable (adjective)

1. Impossible to deny, dispute, or challenge; irrefutable.
2. Too obvious or significant to be overlooked or ignored.

Origin:

The word 'undeniable' comes from the late middle english word 'undeniable' meaning 'incontestable, indisputable' and is derived from the prefix 'un-' meaning 'not' and the word 'deniable' meaning 'capable of being denied'.

Examples:

1. The evidence of his guilt was undeniable.
2. The fact that she has a photographic memory is undeniable.
3. The undeniable truth is that the world is facing a climate crisis.
4. It's undeniable that he is the best candidate for the job.
5. The undeniable reality is that we must adapt to the changing circumstances.