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English word deaf comes from Proto-Indo-European *dʰew-, Proto-Indo-European *dʰūp-, Proto-Indo-European *dʰewbʰ-, and later Proto-Germanic *daubaz (Deaf. Stunned.)
*dʰew- (Proto-Indo-European)
to run, flow
*dʰūp- (Proto-Indo-European)
to smoke
*dʰewbʰ- (Proto-Indo-European)
black
*dheubh- (Proto-Indo-European)
*daubaz (Proto-Germanic)
Deaf. Stunned.
dēaf (Old English)
deef (Middle English)
Deaf (unable to hear).
deaf (English)
(with "the") Those who are deaf, taken as a group.. A deaf person. (obsolete, UK, dialect) Decayed; tasteless; dead.. Obscurely heard; stifled; deadened.. Unable to hear, or only partially able to hear.. Unwilling to listen or be persuaded; determinedly inattentive; regardless. (obsolete, transitive) To deafen.