Words similar to difficult

Example sentences for: difficult

How can you use “difficult” in a sentence? Here are some example sentences to help you improve your vocabulary:

Participants believed that the PCAOB needs to be quickly set up and establish its priorities so it can begin the difficult task of restoring public confidence.
What could be the point of making a good thing more difficult?
It is difficult for the nonspecialist reader (like me) to assess the validity of his arguments, which are based on his contention that the language (and its congeners) were carried along by the spread of nomad pastoralism.
As it is difficult to assess the orientation of the underlying corpus callosum laterally, analysis of neurite orientiation relative to the underlying tract was restricted to portions of the corpus callosum medial to the cingulum.
Obviously I can't point out what a horror his mother is, but it's very difficult to watch him take these unrelenting guilt trips.