perpetual
/pɝˈpɛtʃuəɫ/
never ending or changing; occurring repeatedly
perpetual in a sentence
“The perpetual motion machine is a physical impossibility.”
Origin of perpetual
Latin perpetualis continuous from perpetuus continuous, universal from per- through + petere to go to, seek
Related Words
perennial
lasting for an indefinite time; enduring
immutable
unchanging over time or unable to be changed
indelible
making marks that cannot be removed; unforgettable
ineffaceable
unable to be erased or forgotten
vestige
a trace of something that is disappearing or no longer exists
remnant
a small remaining quantity; a surviving trace