🎴 Flashcard Mode

Impervious means not allowing passage or not affected by something - it describes something that cannot be penetrated or influenced. 'Flexible' is the opposite because it describes something that can bend, adapt, or change form in response to forces, making it receptive to influence or passage. 'Resistant' is similar to impervious, not opposite. 'Solid' and 'Not responsive' are synonyms or related concepts, not antonyms.