Help! from anonymous

Hi Word Spy, I have the same problem as Kosta but I still don't get the:

secret <-
secret
secret
secret
secret
secret

Got any more clues?
p.s. I've gotten all the other codes cracked so far

Dear Anonymous,

That's great that you've worked out all the other codes - well done!

Now let's see how I can help with this one, without give TOO much away.

There's an expression that spies use when they want to say something is very very very secret. Look at all those "secrets" in the column, with the arrow pointing to the one right on ---- oops, I nearly gave it away! Can you work it out now? Let me know.

from your sneaky friend,

The Word Spy