unalterable
Cannot be changed
Unalterable means incapable of being changed or modified.
What is unalterable cannot be revised, amended, or undone: The court's decision was final and unalterable.
The word often describes fundamental principles, facts of nature, or binding commitments: an unalterable truth, unalterable terms of the contract.
It carries more weight than simply unchanging—it suggests impossibility rather than mere persistence.
Impossible to modify
- immutableIncapable of being changed
- fixedRestored or immovable
- permanentFixed without end
- irreversibleCannot be undone
indelible · set · unchanging · unmodifiable · irrevocable · binding · final · conclusive
Refusing to give way
- unbendingRefusing to change position
- resoluteFixed in purpose
- adamantStubbornly refusing to yield
- steadfastFirmly loyal, unshakeable
unwavering · firm · determined · unswerving · unshakeable · tenacious · dogged · immovable
Unaffected by eras
- perpetualLasting without interruption
- everlastingLasting for all time
- agelessWithout apparent deterioration
- immortalCannot die
enduring · perennial · abiding · lasting · ceaseless · unending · deathless · infinite
Unable to bend
- rigidUnable to bend
- stiffNot easily bent
- unadaptableCannot modify to fit
- uncompromisingRefusing to yield ground
strict · hard · stringent · ironclad · nonnegotiable · absolute · unconditional · inviolable
unchangeable
Impossible to modify
irreversible · indelible · set · unchanging · unmodifiable · irrevocable · binding · final · conclusive · definitive
unyielding
Refusing to give way
steadfast · unwavering · firm · determined · unswerving · unshakeable · tenacious · dogged · immovable · stalwart
timeless
Unaffected by eras
- perpetualLasting without interruption
- everlastingLasting for all time
- agelessWithout apparent deterioration
immortal · enduring · perennial · abiding · lasting · ceaseless · unending · deathless · infinite · undying
inflexible
Unable to bend
- rigidUnable to bend
- stiffNot easily bent
- unadaptableCannot modify to fit
uncompromising · strict · hard · stringent · ironclad · nonnegotiable · absolute · unconditional · inviolable · sacrosanct
- durabilitytoughness, durable, sturdiness, robustness, sturdy
- predeterminedfate, destiny, kismet, preordained, prearranged
unalterablealterable
Able to be changed
changeable · modifiable · mutable · variable · adjustable