Sportsman is more dangerous without first couple (5)
I believe the answer is:
skier
'sportsman' is the definition.
(someone who skis)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for skier that I've seen before include "needs catching on way down" , "Slider on snow" , "Mountain racer" , "He glides over snow, perhaps in sport" , "Winter sports athlete" .)