incommutable

• Adjectif désuet signifiant qui ne peut être changé ou remplacé ; immuable, inaltérable.

An obsolete adjective meaning not capable of being changed or exchanged; unchangeable.

1. UnchangeableC2formal

   Not subject to alteration or change; fixed and permanent.

   Incommutable (fixe, permanent)

   • The terms of the contract are incommutable and cannot be renegotiated.
   • The judge delivered an incommutable verdict.
   • Some traditions are considered incommutable in this culture.

   Synonymesfixedimmutablepermanentunalterableunchanging

   Antonymesalterablechangeablemutablevariable

2. Non-interchangeableC2formal

   Not able to be exchanged or substituted for one another.

   non-interchangeable

   • These two components are incommutable and must be used in their specific slots.
   • The roles in the ceremony are incommutable.
   • In mathematics, certain operations are incommutable.

   Synonymesinconvertiblenoninterchangeableunexchangeable

   Antonymescommutableexchangeableinterchangeablesubstitutable