1.

1. 枯燥：borderline syndrome 边缘综合症 | boredom 枯燥 | boredom 厌烦

1. 厌烦；厌倦
    Boredom is the state of being bored.

    e.g. He had given up attending lectures out of sheer boredom...
           他不再去听那些讲座完全是出于厌倦。
    e.g. They often find they begin to chat to relieve the boredom of the flight.
           他们发现自己常常是为了打发飞行途中的无聊才开始聊天。

1. the feeling of being bored by something tedious

    Synonym: ennuitedium