What is the crossword answer for the clue: Hard knocks

BOPS - a 4 letter word may be the answer you are looking for!

SCHOOLOF - a 8 letter word may be the answer you are looking for!

SLAMS - a 5 letter word may be the answer you are looking for!

RAPS - a 4 letter word may be the answer you are looking for!

Hard knocks

4 Character Answers:

BOPS

RAPS

5 Character Answers:

SLAMS

8 Character Answers:

SCHOOLOF