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audism

n. The notion that one is superior based on one's ability to hear or behave in the manner of one who hears.

Wikipedia
Audism

Audism is the notion that one is superior based on one's ability to hear or to behave in the manner of one who hears, or that life without hearing is futile and miserable, or an attitude based on pathological thinking which results in a negative stigma toward anyone who does not hear. Tom L. Humphries coined the term in his doctoral dissertation in 1977, but it did not start to catch on until Harlan Lane used it in his own writings. Humphries originally applied audism to individual attitudes and practices; whereas Lane broadened the term to include oppression of deaf people.

Audism is a form of ableism, discrimination on the basis of disability. Like racism or sexism, audism assigns labels, judges and limits individuals based on whether they can hear or speak. People who practice audism are called audists. Although it stems predominantly from hearing people, audism can manifest itself in anyone, intentionally or unintentionally.