IQ Question! Test Your IQ Here Right Now!

I came up with an IQ question all by myself! Here it is :

"Find the suitable word that comes next in the series."

For Example,

1. Big
2. Bigger
3. ???

The superlative of big is biggest. It's easy. Just add a "-est" behind the word.

The real question will be more challenging.







Here's the real question :




"Find the suitable word that comes next in the series."

1. Pin
2. Pinner
3. ???

What's comes next?


(Remember to say it out aloud to make it easier to obtain an accurate answer!)


You thinking what i'm thinking? *wink* *wink*







PS : It came to my mind when the physics teacher repeated "Thinnest copper wire" a few times, stressing on the word "Thinnest" , "Thinnest", "Thinnest". =D