Words that come from the root credo?

Lets see: credential(s), (dis)credibility, (in)credible, creed, credence, (in)credulity, (in)credulous, (dis)credit(able), (in)credulous(ly), accredit(ation), etc.

Credo means "what i believe" (or maybe "to believe" in some circumstances i guess), i thought i might add that just in the case it makes you think of more Words that i didn't.