difficult

(verb): To make difficult; to impede; to perplex.
(adjective): Hard, not easy, requiring much effort.
(adjective): (often of a person, or a horse, etc) Hard to manage, uncooperative, troublesome.
(adjective): Unable or unwilling.

However, the difficult weather conditions will ensure Yunnan has plenty of freshwater.
Stop being difficult and eat your broccoli—you know it's good for you.