imperviousadjective · Level 1 SAT1unable to be penetrated, unaffectedShe seemed impervious to the stress that had visibly worn down every other member of the surgical team.ModuleLevel 1Registeracademic, argument, common, toneCollectionCollection 012SAT Core planAlso in Collection 012desultory, legitimate, impartial, deficient, rudimentary, habitual, fallacious, judicious and 1 more