inalterable
Fixed beyond modification
Inalterable means unable to be altered or changed.
The word is a rare variant of unalterable, carrying the same meaning but appearing far less frequently in modern usage: The contract's terms were inalterable.
Both forms describe something fixed, permanent, or immutable.
Not varying at all
- unchangeableImpossible to modify
- immutableIncapable of being changed
- eternalLasting without end
- everlastingLasting for all time
perpetual · enduring · lasting · timeless · constant · abiding · indelible · imperishable
Cannot be undone
- finalLast and decisive
- bindingLegally or morally required
- definitiveSettling a question finally
- conclusiveEnding all debate
settled · absolute · unchallengeable · unmodifiable · terminal · decided · determined · sealed
Solid or resolute
- unwaveringSteady and unchanging
- unyieldingRefusing to give way
- steadfastFirmly loyal, unshakeable
- adamantStubbornly refusing to yield
inflexible · rigid · unbending · uncompromising · obstinate · stubborn · tenacious · dogged
Fixed securely in position
- lockedFastened with a mechanism
- cementedFastened with lasting adhesion
- securedMade fast or obtained
- entrenchedFirmly established, resistant to change
rooted · embedded · established · ingrained · deep-seated · hardwired · codified · enshrined
unchanging
Not varying at all
- unchangeableImpossible to modify
- immutableIncapable of being changed
- eternalLasting without end
everlasting · perpetual · enduring · lasting · timeless · constant · abiding · indelible · imperishable · indestructible
irrevocable
Cannot be undone
- finalLast and decisive
- bindingLegally or morally required
- definitiveSettling a question finally
conclusive · settled · absolute · unchallengeable · unmodifiable · terminal · decided · determined · sealed · decreed
firm
Solid or resolute
- unwaveringSteady and unchanging
- unyieldingRefusing to give way
- steadfastFirmly loyal, unshakeable
adamant · inflexible · rigid · unbending · uncompromising · obstinate · stubborn · tenacious · dogged · unshakable
anchored
Fixed securely in position
entrenched · rooted · embedded · established · ingrained · deep-seated · hardwired · codified · enshrined · institutionalized
inalterablealterable
Able to be changed
changeable · mutable · modifiable · variable · adjustable