a.

1. 興奮的；忙亂的；鬧哄哄的
   I had a hectic day in the office.

   我在辦公室裡忙亂了一天。

2. （因患病）發熱的，升火的

adj.

1. full of incessant or frantic activity.
2. Medicine,  archaic affected by or denoting a recurrent fever typically accompanying tuberculosis, with flushed cheeks and hot, dry skin.

n.