The first hint to crack the puzzle "If you know your __, you're clever" is:

It is a word which contains 6 letters

The second hint to crack the puzzle "If you know your __, you're clever" is:

It starts with letter o

The third hint to crack the puzzle "If you know your __, you're clever" is:

It ends with letter s

Looking for extra hints for the puzzle "If you know your __, you're clever"

Click on any empty tile to reveal a letter

The answer for the puzzle "If you know your __, you're clever" is: