unmodifiable

Set in stone

Unmodifiable means incapable of being changed or altered.

The term appears most often in technical contexts—an unmodifiable file cannot be edited, an unmodifiable setting is locked.

In legal or contractual language, unmodifiable terms are fixed and non-negotiable.

The word emphasizes permanence or restriction: The court ruled the agreement unmodifiable.

permanent

immutable

Incapable of being changed

unchangeableImpossible to modify
unalterableIncapable of being changed
fixedRestored or immovable

constant · invariable · perpetual · eternal · enduring · lasting · permanent · indelible · irreversible · irrevocable

rigid

inflexible

Unable to bend

unyieldingRefusing to give way
unbendingRefusing to change position
rigidUnable to bend

stiff · inelastic · unadaptable · hardcoded · locked · frozen · sealed · finalized · absolute · non-negotiable

protected

read-only

Viewable but not changeable

restrictedLimited in scope
securedMade fast or obtained
encryptedTransformed into cipher

tamper-proof · write-protected · safeguarded · uneditable · authenticated · certified · validated · archived · preserved

idiom

set in stone

Permanently fixed, unalterable

cast in concreteImpossible to change
chiseledSharply cut, well-defined
engravedCut into surface

signed and sealed · inscribed

Opposites

changeability

unmodifiablemodifiable

Able to be changed

changeable · alterable · adjustable · editable · mutable

Family

model, modest, modify, accommodate, moderation, modification, modified, commodity, moderate

Familiarity: Top 500,000
Profile: Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G