Find Synonyms
immutable Synonyms
Another word for immutable
Choosing another word for immutable depends on context, so the 12 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
• adjective (Context 1)
Unchanging over time or unable to be changed.
Usage Example
"The physicist argued that the fundamental laws of thermodynamics are unchangeable across the known universe."
Strongest
unchangeable
unalterable
unchanging
Strong
invariable
fixed
set in stone
permanent
constant
inflexible
irrevocable
• adjective (Context 2)
In computing and object-oriented programming, designating an object or data structure whose state cannot be modified after it is created.
Usage Example
"In Python, strings and tuples are unmodifiable types, meaning any operation that appears to alter them actually creates a new object in memory."
Strongest
unmodifiable
Strong
read-only
constant
Opposites of immutable
The opposite of immutable shifts depending on context. Common opposites include:
mutable
changeable
variable
modifiable
alterable
flexible
fluid
unstable
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Immutable. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/immutable