difficult

Hard, not easy, requiring much effort.

difficult of accomplishment

However, the difficult weather conditions will ensure Yunnan has plenty of freshwater.

Hard to manage, uncooperative, troublesome.

Stop being difficult and eat your broccoli—you know it's good for you.

Unable or unwilling.

“I hope, madam,” said Jones, “my charming Lady Bellaston will be as difficult to believe anything against one who is so sensible of the many obligations she hath conferred upon him.”

To make difficult; to impede; to perplex.

August 9 1678, William Temple, letter to Joseph Williamson their Excellencies having desisted from their pretensions , which had difficulted the peace