sycophantic

US /ˌsɪk.əˈfæn.tɪk/
UK /ˌsɪk.əˈfæn.tɪk/
1.

아첨꾼

(of a person or of behavior) praising people in authority in a way that is not sincere, usually in order to get some advantage from them:

:
There was sycophantic laughter from the audience at every one of his terrible jokes.