unchangeable

British  

/ ʌnˈtʃeɪndʒəbəl /

adjective

1. not capable of being changed or altered

---

Explanation

Anything that doesn't alter or shift over time is unchangeable, like the unchangeable rules at your school or your unchangeable conviction that pistachio is the tastiest flavor of ice cream. Things that can't be changed are unchangeable, and this adjective tends to be used for describing really big ideas, like the unchangeable laws of the universe or the unchangeable nature of love. You can use it for anything that seems steadfast, firm, or permanent, like your unchangeable affection for your best friend or your sister's unchangeable insistence that she has to ride in the front seat.

Example Sentences

Joint wills are complicated and, unlike trusts that become irrevocable upon one spouse’s death, are not necessarily unchangeable after one spouse dies.

From MarketWatch • Feb. 23, 2026

A fixed mindset -- the belief that intelligence and ability are unchangeable traits -- is also connected to impostor feelings.

From Science Daily • Jan. 5, 2026

What are the facts of this scene that are unchangeable?

From The Wall Street Journal • Dec. 24, 2025

Most of us take primaries for granted as an unchangeable feature of our politics that has always been with us.

From Los Angeles Times • Mar. 1, 2024

Again she regarded me so icily, I felt at once that her opinion of me—her feeling towards me—was unchanged and unchangeable.

From "Jane Eyre" by Charlotte Brontë