Adjective: unalterable
Comparison Forms
Synthetic
Perifrastic
| Comparative | more unalterable |
| Superlative | most unalterable |
Sample Sentences
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People of unalterable ideas still insisted upon calling him "Sergeant" when they met him, which was in some degree owing to his having still retained the well-shaped moustache of his military days, and the soldierly bearing inseparable from his form. [1874, Thomas Hardy, “Coming Home—A Cry”, in Far from the Madding Crowd. […], volume II, London: Smith, Elder & Co., […], →OCLC, pages 99–100:]
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... every statute in the Bible and in the law books is an attempt to defeaat a law of God—in other words an unalterable and indestructible law of nature. [c. 1909, Mark Twain, Letters from the Earth, Letter VIII:]
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For instance, we’d need to make one of the following assumptions: (1) that the system will be programmed with an unalterable goal preservation meta-goal, (2) that the training process would select for such a meta-goal, or (3) that the adoption of the meta-goal itself is instrumentally convergent. [2025 June 13, Rhys Southan, Helena Ward, Jen Semler, “A timing problem for instrumental convergence”, in Philosophical Studies, Springer Science+Business Media, →DOI, →ISSN, →OCLC:]
Adjectives inflected like unalterable
priest-ridden,
unreposed,
evadible,
dissentious,
dissentient,
unforesighted,
egocentrical,
unephemeral,
unennobling,
mensuralist,
flocculent,
unseductive,
whoopsy,
whooshy,
surrogate,
Nicodian,
unrepaired,
prismatoidal,
renorenal,
unseducible, etc. (List truncated at 20 adjectives)
Etymology
1. Etymology tree
2. English un-
3. English alter
4. Proto-Indo-European *-tḗr
5. Proto-Indo-European *-dʰlomder.
6. Proto-Indo-European *-dʰlis
7. Proto-Italic *-ðlis
8. Latin -bilis
9. Latin -ābilis
10. Old French -ablebor.
11. Middle English -able
12. English -able
13. English alterable
14. English unalterable
15. From un- + alterable.