SAT TOEFL IELTS infinite Definition Limitless or endless in space, extent, or time; immeasurable. Example "The universe may contain infinite galaxies." Sign in to save SAT Quiz → TOEFL Quiz → IELTS Quiz → ← infiltrate infinitesimal → Study tips featuring "infinite" 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