SAT TOEFL IELTS extensive Definition Large in area, scale, or scope. Example "The firefighters faced extensive damage after the blaze was extinguished." Sign in to save SAT Quiz → TOEFL Quiz → IELTS Quiz → ← extension extent → Study tips featuring "extensive" Let the Argument Reveal Unfamiliar Word Meanings Study the Exact Words Examiners Use Map Each Word Into a Connected Network 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