Where can i find a list of words that are not suitable for radio ?

Were trying to make a clean radio version of a song he made . I got a friend that writes lyrics for his songs but were not quite sure what words we cannot use . There has to be something that has detailed words or phrases including modern slang that is censored from music and tv , right ? Please help !

Check the FCC website. I'm pretty sure though there isn't any official list. Of course there is George Carlin's 7 words you can't say sh!t, pi$$, F, Cword, **** $ucker, mother Fr and Ahole.