Clue: Steps taken quickly upset doctor, and cause suffering and delay (8)
Answer: GALLIARD
Explanation: Definition: Steps taken quickly
[*upset*] **<=(Dr.** (doctor) *and* **AIL** ("cause suffering") *and* **LAG** ("delay") 
 
 
*A galliard was a lively dance, popular in the 17th and 18th centuries.