Complex Skills – Involving complicated movements that require high levels of co-ordination and control

(Pronounced kom-pleks)

Note: Complex skills include serving in tennis, throwing a discus and performing a vault in gymnastics. 

I was completely perplexed (complex skills) by their complicated skills that required high levels of co-ordination. 

Complex skills also involve actions which involve more interpretation judgement and decision making. For example, a golfer reading the green before making a long putt.