SAT GRE TOEFL IELTS invincible Definition Impossible to defeat or overcome. Example "The champion felt invincible after winning ten matches in a row." Sign in to save SAT Quiz → GRE Quiz → TOEFL Quiz → IELTS Quiz → ← invigorate inviolable → Study tips featuring "invincible" 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