unalterable

American  

[uhn-awl-ter-uh-buhl] / ʌnˈɔl tər ə bəl /

adjective

1. not capable of being altered, changed, or modified.

---

unalterable British  

/ ʌnˈɔːltərəbəl, -ˈɔːltrəbəl /

adjective

1. (of a condition, truth, etc) unable to be changed or altered

---

Other Word Forms

• unalterability noun
• unalterableness noun
• unalterably adverb

Etymology

Origin of unalterable

First recorded in 1610–15; un- ¹ + alterable

Example Sentences

Cryptocurrency is a type of digital money secured via encryption in a publicly viewable and purportedly unalterable way.

From Seattle Times

“That’s why they can’t drive or drink alcohol or join the military until they get to a certain age. Because there is a level of maturity that goes along with decisions that are unalterable.”

From New York Times

Perhaps Mr. Hannum could channel his enthusiasm toward a solution: Use the blockchain — with all its promises of permanent, unalterable records — to create an opt-in, verified platform for education and employment history.

From New York Times

But conversion to real money is also the point at which the “transparency” provided by the public, unalterable recording of transactions on the blockchain — supposedly the big benefit of cryptography — vanishes.

From Washington Post

For two decades, professional tennis bathed in the golden glow provided by an unalterable hierarchy of players with distinctive styles and personalities that combined to define the game in the 21st century.

From New York Times