IPA: /ˈdʌm.nəs/
KK: /dʌm.nəs/
The condition of being unable to speak or communicate verbally, often due to a physical inability or a choice not to speak.
His dumbness made it difficult for him to express his thoughts to others.
Dumbness → It is formed from "dumb" (from Old English "dumb", meaning unable to speak) and the suffix "-ness" (meaning the state or quality of). The word "dumbness" refers to the state of being unable to speak or the quality of being mute.
Think of the state of being 'unable to speak' — 'dumb' means unable to talk, and '-ness' indicates a quality or state.