immutable

Some principles are immutable and should never be compromised.

The laws of physics are considered immutable in most scientific theories.

She held onto her immutable beliefs despite criticism from others.

The company's mission statement remains immutable since its founding.

In mathematics, an immutable truth is that 1+1 always equals 2.

His love for her was immutable, lasting through all challenges.

The ancient laws of the land were considered immutable and sacred.

The artist's style was so distinctive and immutable that it became his trademark.

The bond between the two friends was immutable, enduring the test of time.

Despite the changing trends, her fashion sense remained immutable.