Inexorable (adjective)

Not to be swayed or diverted from a course; relentless.

Origin:

From latin inexorabilis ("unrelenting, unyieldin.g")

Examples:

1. The inexorable march of time cannot be stopped.
2. The company was facing an inexorable decline in sales.
3. The inexorable pressure from the competition was forcing them to innovate.
4. The inexorable force of gravity keeps us on the ground.
5. In the face of the inexorable rise in costs, the company had no choice but to raise prices.