Irrefutable

adjective/ir-rif-YOO-tuh-buhl/

Meaning

Something irrefutable is so certain that it cannot be proven wrong or argued against.

In context
Her irrefutable evidence convinced even the doubtful judges at the science fair.

Remember it

You cannot 'refute' (argue against) it, and 'ir-' seals that — irrefutable can't be knocked down.

Use it well

Use for evidence, facts or arguments that are impossible to disagree with.