unchanging

The story was simple and unchanging; I was my mother's only child.

Moreover, Palmerduca and Qin established that the two movement components can't be split because of a photon's topological, unchanging properties, like its polarization.

But only by monitoring it continuously, in an unchanging way, over a long stretch of time, can they be confident about what’s going on.

"The unchanging ice phenology of Yellowstone Lake stands in stark contrast to similar lakes in the Northern Hemisphere."

All except the shortest wars have times when killing is an unchanging, grim routine.