Perfect
Unchanged
Unchanged adjective - Not made or become different.
Perfect and unchanged are semantically related. Sometimes you can use "Perfect" instead an adjective "Unchanged".
Nearby Words: unchanging, unchangeable
Both words in one sentence
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In the novels she does the same to create a perfect version of the Giga Slave (in the anime the incantation for the perfect Giga Slave is unchanged in the English subtitles and dub).
Source: Calling Your Attacks - Finder Wyvernspur attempted something similar, feeling that his music was too perfect to be trusted to mere bards who would change them to suit their interests at the time and wanted them to exist unchanged by time.
Source: Truly Single Parent -
V.V. from Code Geass is a perfect example, It seems that the immortality in the Code Geass world works keeping your body unchanged so if you receive it being a 10 years old boy you'll be a 10 year old boy forever.
Source: Not Growing Up Sucks
Cite this Source
Unchanged and Perfect. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/perfect/unchanged
Perfect & Unchanged. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/perfect/unchanged>.
Unchanged or Perfect. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/perfect/unchanged.
Google Ngram Viewer shows how "perfect" and "unchanged" have occurred on timeline