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" Map Each Word Into a Connected Network Map the Author's Attitude Before Reading Questions Audit Your Own Writing for Lexical Resource 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