Words similar to hard

Example sentences for: hard

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

And hard to read--impossible to read.
formularies) clearly work, but are resented by physicians, and can be hard to implement.
No matter how hard I try, I feel that I say the wrong thing or something inappropriate.
Coulter's legal scholarship is so repetitious and garbled that it's hard to puzzle out her definition of "high crimes and misdemeanors."
I agree with Mr. Henn that the origins of slang words are hard to pinpoint.