4 Pics 1 Word Puzzles

What is the 1 word (5 letters) answer to the puzzle below? Scroll down to see the answer!

4 Pics 1 Word Answer 5 letters for man studying binder with hand on head, cartoon of karate chop cement block break, mobster with sunglasses and fist, girl student with difficult work

Study, Karate, Mobster, Difficult

The Answer is: