SAT GRE TOEFL IELTS immune Definition Protected against a particular infection or disease. Example "She is immune to measles after receiving the vaccine." Sign in to save SAT Quiz → GRE Quiz → TOEFL Quiz → IELTS Quiz → ← immortal immunity → Study tips featuring "immune" Let the Argument Reveal Unfamiliar Word Meanings Study the Exact Words Examiners Use Group Words Together by Emotional Tone 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