SAT impassable Definition Not able to be passed through or across. Example "The road became impassable after the heavy snowfall." Sign in to save SAT PDF — $25 ← impartially impasse → Study tips featuring "impassable" How Context Clues Save You on the SAT 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