unimpressed, indifferent, apathetic, unexcited, unenthusiastic, lukewarm, half-hearted, listless, uninterested
be immune to - be insusceptible to - be unaffected by - be unresponsive to - be resistant to - be impervious to
To "be impervious towards" something or someone means to remain unaffected, unmoved, or unresponsive by their actions, feelings, or influence. A person who is impervious towards criticism, for example, does not let negative comments emotionally impact them. It can describe emotional resilience, but also emotional coldness or lack of empathy, depending on context. The phrase emphasizes a kind of psychological or emotional barrier where external factors, such as opinions, insults, praise, or persuasion, fail to penetrate or cause change in attitude, mood, or behavior.