TOEFL insurmountable Definition Too great to be overcome or surpassed. Example "The challenge seemed insurmountable, but she refused to give up." Sign in to save TOEFL Quiz → ← insurgent insurrection → Study tips featuring "insurmountable" Map Each Word Into a Connected Network Track How TOEFL Words Behave With Others Group TOEFL Words Around Academic Themes Related words TOEFL brighten GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate GRE abduct SAT abet GRE abhor GRE abide SAT abject TOEFL ablaze