Actor Ryan Reynolds is worried his daughter's first word will be "f**k".

The 38-year-old's seven-month-old daughter James spent a lot of time on the set of his new movie `Deadpool` and he hopes the bad language used in the film wouldn't have influenced her, reports eonline.com.

`She's going to learn those words eventually anyway. If her first word is f**k, then I've done something wrong, but otherwise I think we're fine. I think we're OK.

`The second or third (word), that's fine. But the first? No. It's going to have to be mom or dad. I'm rooting for mom,` he added.

Reynolds was at Comic-Con in San Diego and was very impressed with the lengths people went to in order to imitate his superhero alter ego.

He said: "I've probably seen about 400 (Deadpools) at this point.

"I saw a couple that were awesome, that were really amazing. One guy (had) contact lenses underneath, really elaborate stuff. I took a picture with about eight of them that I saw just outside a little while ago...It was cool to see that. It was cool to see that level of passion and determination to make a perfect 'Deadpool'."