a.

1. 兴奋的；忙乱的；闹哄哄的
   I had a hectic day in the office.

   我在办公室里忙乱了一天。

2. （因患病）发热的，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.