what is the difference between dumb and stupid
Dumb is a related term of dummy. From (etyl) dumb, from (etyl) . In ordinary spoken English, a phrase like He is dumb is interpreted as He is stupid rather than He lacks the power of speech. The latter example, however, is the original sense of the word.
Philosophy of Everyday Life. Stupid refers to a person's incapacity to understand a simple concept. An idiot acts upon his stupidity, in full embrace, and with neither a second thought or a shred of shame. These are the definitions I generally use against stupid people and idiots. Asshole takes things to a whole other level.