Hi,
I checked several organizations and societies to see the terms they prefer.
Elizabeth

Gallaudet University   https://urldefense.com/v3/__https://gallaudet.edu/about/__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-Vqvmp2psSv$ 
Gallaudet University will build upon its rich history as the world's premier higher education institution serving deaf and hard of hearing people to become the university of first choice for the most qualified, diverse group of deaf and hard of hearing students in the world, as well as hearing students pursuing careers related to deaf and hard of hearing people.

Galludet LibGuide (from 2007)  https://urldefense.com/v3/__https://libguides.gallaudet.edu/c.php?g=773982&p=5552747__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-VqvkgkO8X0$ 
This guide includes information for librarians who work with deaf or hard of hearing patrons or with deaf-related collections.
This list is rather technical and its primary audience is librarians interested in cataloging and describing their collections of deaf-related materials. It may be useful to researchers, both professionals and students, but they are not the intended audience.
(The related link didn't connect.  We can probably contact them if we want to see if it's still available or has been updated.)

World Health Organization   https://urldefense.com/v3/__https://www.who.int/news-room/fact-sheets/detail/deafness-and-hearing-loss*:*:text=People*20who*20are*20hard*20of,use*20sign*20language*20for*20communication__;I34lJSUlJSUlJQ!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-Vqvs_ZGxq_$ 

Hearing loss and deafness
A person who is not able to hear as well as someone with normal hearing - hearing thresholds of 20 dB or better in both ears - is said to have hearing loss. Hearing loss may be mild, moderate, severe, or profound. It can affect one ear or both ears and leads to difficulty in hearing conversational speech or loud sounds.
'Hard of hearing' refers to people with hearing loss ranging from mild to severe. People who are hard of hearing usually communicate through spoken language and can benefit from hearing aids, cochlear implants, and other assistive devices as well as captioning.
'Deaf' people mostly have profound hearing loss, which implies very little or no hearing. They often use sign language for communication.


RespectAbility   https://urldefense.com/v3/__https://www.respectability.org/inclusion-toolkits/deaf-hard-of-hearing/__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-Vqvnole5oy$ 

Deafness is defined as a hearing loss that prevents a person from understanding speech through the ear. People who are hard of hearing have a more mild or moderate hearing loss that may or may not be corrected with amplification.  A person who is deaf may also have speech difficulties.
Some people who are deaf would not like to be called hearing impaired due to the negativity of the word impaired. Say "person who is deaf" or "person who is hard of hearing." If someone is both deaf and blind, the term is deafblind. Never say deaf and dumb. Many people in the Deaf community prefer use of a lowercase "d" to refer to audiological status and the use of a capital "D" when referring to the culture and community of Deaf people.

National Association of the Deaf  https://urldefense.com/v3/__https://www.nad.org/about-us/faq/__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-Vqvni15wxN$ 
The majority of our clients are deaf and hard of hearing, and we also provide services to parents and other family members of deaf individuals as well as other individuals and organizations that are interested in supporting the rights of deaf and hard of hearing people.
Deaf and hard of hearing people have the right to choose what they wish to be called, either as a group or on an individual basis. Overwhelmingly, deaf and hard of hearing people prefer to be called "deaf" or "hard of hearing." Nearly all organizations for the deaf use the term" deaf and hard of hearing," and the NAD is no exception. The World Federation of the Deaf (WFD) also voted in 1991 to use "deaf and hard of hearing" as an official designation.
For a long time, many in the disability community emphasized "people first" language, although that issue is now a recent topic of debate. By contrast, the deaf and hard of hearing community has always preferred to place an emphasis on our culture first. Consequently, many in our community prefer to use "deaf child" or "hard of hearing child" rather than "a child who is deaf."
The National Association of the Deaf (NAD) believes that being deaf is not a disability but rather a cultural identity and support the identity first approach.


National Black Deaf Advocates  https://urldefense.com/v3/__https://www.nbda.org/__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-Vqvoju9TWY$ 
National Black Deaf Advocates (NBDA) is the official advocacy organization for thousands of Black Deaf and Hard of Hearing Americans. For more than three decades, NBDA has been at the forefront of advocacy efforts for civil rights and equal access to education, employment, and social services on behalf of the Black Deaf and Hard of Hearing in the United States.




American Society for Deaf Children  https://urldefense.com/v3/__https://deafchildren.org/__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-Vqvutc7Gch$ 
The American Society for Deaf Children (ASDC)  is committed to empowering all families with deaf* and hard-of-hearing children and youth by embracing full language and communication access in inclusive environments through mentoring, advocacy, resources, and collaborative networks.
*ASDC uses the term deaf to be inclusive of various hearing levels and identities within the deaf community.


HHS   https://urldefense.com/v3/__https://www.hhs.gov/civil-rights/for-individuals/disability/effective-communication/index.html__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-VqvkDrrP9s$ 
Effective Communication for Persons Who Are Deaf or Hard of Hearing
Effective communication with a qualified person who is deaf or hard of hearing is communication that allows the person an equal opportunity to participate in, and enjoy the benefits of, a service, program, or activity.
What laws apply to effective communication for people who are deaf or hard of hearing?
Section 504
Section 504 of the Rehabilitation Act of 1973 (Section 504) forbids public and private entities that receive financial assistance from any federal department or agency ("covered entities") from excluding qualified individuals with disabilities or denying them an equal opportunity to receive program benefits and services.
ADA
The Americans with Disabilities Act of 1990 (ADA) protects individuals with disabilities in employment, state and local government services, public accommodations (most private offices and businesses), transportation, and telecommunications.


Hearing Disabilities in the Workplace and the Americans with Disabilities Act
https://urldefense.com/v3/__https://www.eeoc.gov/laws/guidance/hearing-disabilities-workplace-and-americans-disabilities-act*:*:text=*5B4*5D*20People*20with*20a*20variety,noise)*20may*20have*20ADA*20disabilities__;I34lJSUlJSUlJSUl!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-VqvqimDCoZ$ 
(Long piece - excerpts)
Individuals who are deaf, hard of hearing, or have other hearing conditions can perform successfully on the job and, under the ADA, should not be denied opportunities because of stereotypical assumptions about those conditions.

National Deaf Center on Postsecondary Outcomes (University of Texas at Austin)
https://urldefense.com/v3/__https://nationaldeafcenter.org/resources/deaf-awareness/__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-VqvkQLTocN$ 
While deaf people share certain experiences, the community is highly diverse. Some consider themselves to be part of the unique cultural and linguistic minority who use sign language as their primary language, while others do not. Deaf people have a wide range of communication preferences, cultural and ethnic backgrounds, and additional disabilities that shape their interactions with their environment.
The National Deaf Center is using the term deaf in an all-inclusive manner, to include people who may identify as deaf, deafblind, deafdisabled, hard of hearing, late-deafened, and hearing impaired. NDC recognizes that for many individuals, identity is fluid and can change over time or with setting. NDC has chosen to use one term, deaf, with the goal of recognizing experiences that are shared by all members of our diverse communities while also honoring all of our differences.

What is Some Terminology to Avoid?
Some common terms that are generally viewed as offensive within the deaf community include "hearing impaired," "deaf-mute," and "deaf and dumb." These terms have some intrinsic problems, such as a deficit framing that assumes that deafness is negative, but also have contextual issues, where usage of those terms indicates that the user is unfamiliar with the deaf community. While, again, the deaf community is large and diverse and there are varied preferences within that community, it is generally best to avoid these terms.



World Federation of the Deaf   https://urldefense.com/v3/__http://wfdeaf.org/__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-VqvhtFnAMG$ 
https://urldefense.com/v3/__http://wfdeaf.org/news/statement-on-accessible-communication-during-covid-19-pandemic/__;!!Dq0X2DkFhyF93HkjWTBQKhk!QZ7G25rHAMDY-nmLZhnVSFwDvPzK34M44XkCRdssMSkyaSYyhOY4Jsh8Nz8jkBrNQDMZE_VJvhrCM2g4aK-vcgP_ivQV-JQNb_Zsq-VqvsTd-0qk$ 

The COVID-19 pandemic has resulted in health and protection decisions which have had significant impacts on people's lives, especially deaf and hard hearing people.
Facial coverings and social distancing are two commonly used protection  strategies which may pose barriers for deaf and hard of hearing people. Deaf and hard of hearing people rely heavily on facial expressions, speechreading and other visual input to support our understanding of our conversation partners.




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