From that article, you also have: > In informal American English the term dumb is sometimes used to refer to other hearing people in jest, to chide, or to invo

From that article, you also have: > In informal American English the term dumb is sometimes used to refer to other hearing people in jest, to chide, or to invoke an image of someone who refuses to employ common sense or who is unreliable.[9] In the past deaf-mute was used to describe deaf people who used sign language, but in modern times, the term is frequently viewed today as offensive and inaccurate.[10] I have shown all of the evidence available to me. “I am not reading that or considering it authoritative.” is not a counterargument. > From 2nd ed OED you have, The 2nd edition of the OED is not paywalled. (It also has several methodological issues: https://oed.hertford.ox.ac.uk/oed-editions/oed2/ https://oed.hertford.ox.ac.uk/oed-editions/oed2/) The Wikipedia article references the paywalled online edition, which is probably the 3rd edition entry. All of this information was available to you. Please do not accuse me of "just making things up" without at least checking.