Can My Character be Deaf and Non-speaking?
[Plain Text: Can my character be Deaf and non-speaking?]
Short answer: absolutely! This is not uncommon at all.
Long answer: what you mean by non-speaking is going to influence a lot about this character and how they navigate the world.
Deafness makes it more difficult to speak, because d/Deaf people don't pick up language through auditory reception.
If a character is born d/Deaf, especially if they have Deaf family, they may not do very well at speech therapy or even bother going to speech therapy at all. They likely have a noticeable Deaf accent if they do speak. (See the guide on Deaf Speech [link] for more information about Deaf accents!)
A lot of d/Deaf people are told that their voice sounds weird, so they might feel self-conscious about voicing and choose not to do it. They might also prefer not to voice, even or perhaps especially if they have a less noticeable Deaf accent, because hearing people assume voicing equals hearing ability.
If a Deaf person has early access to sign language, they might never feel a pressure to speak, since they have an accessible first language. Alternately, if they were language deprived, they might never have learned to speak, since d/Deaf people do not pick up spoken language naturally.
In short, there are plenty of Deaf people who don't speak at all, just because they are Deaf. This has historically been called "deaf-mute" or "deaf and dumb" which are considered offensive terms. However, some Deaf people have reclaimed the term DeafMute to describe their experiences as Deaf people who do not voice. As with any reclaimed term, please don't use this to describe your characters unless you are Deaf yourself, or working closely with a Deaf person who can advise you.
If your character is non-speaking or nonverbal for a reason other than Deafness, that can be a totally different life experience. The Deaf community tends to treat Deafness as not being a disability at all; DeafDisabled people are a large but distinct subset of the Deaf community.
Being d/Deaf and having a physical disability that impacts speech (and possibly also signing) like cerebral palsy or apraxia is a different experience than being non-speaking for Deafness alone. Someone who is Deaf and unable to speak because of physical disability might use AAC in both Deaf and hearing spaces. Or, they may be able to sign but not speak, depending on the exact disability, although sign language requires a good amount of fine motor control.
Being autistic, intellectually disabled, or cognitively disabled and d/Deaf is also its own unique experience. Deafness may end up masked due to developmental disability--many deaf children whose deafness is not caught at birth are assessed for autism before being assessed for hearing loss. Low responsiveness to stimuli or less ability to follow directions from an audiologist can also make diagnosing deafness in developmentally disabled people hard.
Some developmentally disabled people, both Deaf and hearing, use some signs as a communication method, but many struggle with language as a whole, not just speech, and won't pick up a full sign language. Again, a visual method of AAC is probably helpful. They may also require other Deaf people to sign more slowly or clearly to them, use fewer words or a simplified vocabulary, or switch to a different method of communication entirely (like writing or picture cards) depending on their receptive language skills. Some Deaf people get very frustrated slowing down their sign language for others, even other d/Deaf people, which can lead to isolation.
Being Deaf and developmentally disabled has many other challenges. Deafness can compound with lower situational awareness. Both signing and stimming are often seen as dangerous behavior by abled hearing people, especially to law enforcement. For a d/Deaf and developmentally disabled person who often interacts with hearing people, they may be more reliant on communication partners to help translate.
Disabilities like situational mutism can also affect d/Deaf people. For signers, situational mutism will probably affect their ability to sign, not just voice (if they do voice), but they may feel comfortable writing.
Being DeafDisabled is a unique experience, to navigate being disabled in both the Deaf and hearing communities. Deafness is often comorbid with other disabilities, so there are lots of people who are d/Deaf and otherwise disabled, but the exact disability will shape how someone interacts with each community.
(Because many people ask about this, the inability to speak without a neurological or psychiatric disability is pretty rare. Damage to the vocal cords or throat account for very few cases of mutism, and usually do not result in a total inability to voice. Please try and represent more complex and underrepresented disabilities than just making a character otherwise abled but unable to speak for no clear reason, which is unfortunately the most common non-speaking representation in fiction.)
In summary, please consider why your character cannot or does not speak. The nature of their disability will shape how they interact with other people, both d/Deaf and hearing, and that changes your approach to writing.
Keep writing, and I'm happy to answer more questions!