If you describe someone as sycophantic, you disapprove of them because they flatter people who are more important and powerful than they are in order to gain an advantage for themselves.
例句
...his clique of sycophantic friends...他那些互相吹捧的朋党We heard the sound of sycophantic laughter.我们听到了谄媚的笑声。
英汉词典释义
adj.
说奉承话的
A large praetorian bureaucracy filled with ambitious and often sycophantic people makes work and makes trouble.充满野心勃勃、阿谀谄媚之人的庞大、腐败的官僚机构，既搞工作也搞麻烦。
英英词典释义
Adjective
1. attempting to win favor from influential people by flattery