unalterable

• 形容无法被改变或修改的事物；持久的、不可改变的。

Describes something that cannot be changed or modified; permanent and fixed.

1. Not capable of being changedC1formal

   Describes something that cannot be modified, adjusted, or altered in any way.

   不可改变的

   • The laws of physics are considered unalterable.
   • His decision was final and unalterable.
   • The contract contains unalterable terms.

   同义词changelessfixedimmutableinalterablepermanentrigidunchangeableunmodifiable

   反义词alterablechangeablemodifiablemutablevariable

2. Of a sentence; that cannot be changedC1formal

   Refers to a legal or official decision, such as a court sentence, that is permanent and cannot be revised.

   不可更改的

   • The judge handed down an unalterable life sentence.
   • The verdict was unalterable, leaving no room for appeal.
   • The terms of the settlement were unalterable.

   同义词bindingfinalfixedimmutableirrevocablepermanentunchangeable

   反义词alterablechangeablereversiblerevocable

3. Remaining the same for indefinitely long timesC1formal

   Describes something that stays constant or unchanged over an extremely long period.

   不可改变的

   • The ancient traditions of the tribe remained unalterable for centuries.
   • The mountain's shape seemed unalterable over millennia.
   • Her commitment to the cause was unalterable.

   同义词constantenduringeverlastingimmutablelastingpermanentperpetualunchangeableunchanging

   反义词alterablechangeablemutablevariable