Sign Language
Source Player Core pg. 97
You might know the signed languages associated with the languages you know, or how to read lips. You can learn these by taking the Sign Language or Read Lips skill feats, or both. If you are creating a character who is deaf, hard of hearing, or unable to speak, discuss with your GM whether it makes sense for your character to know sign languages or lip reading. If so, your GM might allow you to select one of these feats for free (even if you don't meet the prerequisites) to represent your character concept.