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Unalterable

Incapable of changing or being altered

📖 Definitions of "Unalterable"

adjective

7 synonyms found via WordNet and Google Books.

Word	Definition
lastverb	Final, ultimate, coming after all others of its kind.
incurablenoun	Of an illness, condition, etc, that is unable to be cured; healless.
unchangeablenoun	Not changeable; incapable of being changed or of changing; immutable.
finalnoun	(Canada, US, Philippines) A final examination; a test or examination given at the end of a term or class; the test that concludes a class.
changeless	unchanging
inalterable	That cannot be altered.
incommutable	Not commutable

Words with the opposite meaning.

Word	Definition
alterablenoun	Capable of being changed; changeable; mutable.

Found via reverse dictionary — words that share a conceptual meaning.

Word	Definition
inalterable	That cannot be altered.
incurable	Of an illness, condition, etc, that is unable to be cured; healless.
unchangeable	Not changeable; incapable of being changed or of changing; immutable.
incommutable	Not commutable
changeless	unchanging
last	Final, ultimate, coming after all others of its kind.
final	Last; ultimate.
inviolable	Not violable; not to be infringed.
immutable	Unable to be changed without exception.
unchanged	Not changed or altered; remaining in an original state.
intangible	Incapable of being perceived by the senses; incorporeal.
unchanging	remaining constantly unchanged
unabated	Continuing at full strength or intensity.
intransmutablenoun	Not capable of being transmuted, or changed into another substance.
unmodifiable	Incapable of being modified; immune to modification.
nonmodifiable	Incapable of being modified; immune to modification.
unaltering	Not altering; unchanging, constant.
indiminishable	Incapable of being diminished.
indistortable	Incapable of being distorted.
nonchangeable	Not changeable.