hardened

1. ADJ If you describe someone as hardened, you mean that they have had so much experience of something bad or unpleasant that they are no longer affected by it in the way that other people would be. (因经历过很多艰苦而)铁石心肠的; 麻木不仁的[usu ADJ n]

...hardened criminals. ...冷酷无情的罪犯。

...hardened politicians. ...麻木不仁的政客。