/'sɑ:kæzəm; `sɑrkæzəm/
n [U] (use of) bitter, esp ironic, remarks intended to wound sb's feelings 讥讽; 讽刺; 挖苦
*her constant sarcasm about his poor work 她对他作品拙劣的一贯嘲讽.

n[U]
[Date: 1500-1600; Language: French;Origin: sarcasme, from Late Latin, from Greek sarkasmos, from sarkazein 'to tear flesh, bite your lip angrily, sneer', from sarx 'flesh']
a way of speaking or writing that involves saying the opposite of what you really mean in order to make an unkind joke or to show that you are annoyed
　'Good of you to arrive on time,' George said, with heavy sarcasm (=very clear sarcasm) .
hint/trace/edge/touch of sarcasm
　There was just a touch of sarcasm in her voice.