Self-referential.
The first hint to crack the puzzle «Self-referential.» is:
It is a word which contains 4 letters
The second hint to crack the puzzle «Self-referential.» is:
It starts with letter M
M
The third hint to crack the puzzle «Self-referential.» is:
It ends with letter A
M
a
Looking for extra hints for the puzzle «Self-referential.»:
Click on any empty tile to reveal a letter
M
a
The answer for the puzzle «Self-referential.» is:
M
e
t
a