unctuous

1. ADJ If you describe someone as unctuous, you are critical of them because they seem to be full of praise, kindness, or interest, but are obviously insincere. 虛情假意的[正式]

...the kind of unctuous tone that I've heard often at diplomatic parties. ...我在外交聚會(huì)上經(jīng)常聽(tīng)到的那種虛情假意的腔調(diào)。

2. ADJ If you describe food or drink as unctuous, you mean that it is creamy or oily. (食物、飲品)油膩的[正式]