SAT GRE TOEFL immutable Definition Unchanging over time or unable to be changed. Example "The laws of physics are considered immutable by scientists." Sign in to save SAT Quiz → GRE Quiz → TOEFL Quiz → ← immunity imp → Study tips featuring "immutable" Map Each Word Into a Connected Network Map the Author's Attitude Before Reading Questions Force Contrast Between Two Similar Words Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal