dumb

/ˈdəm/

Middle English, from Old English; akin to Old High German tumb mute

adjective

  1. lacking intelligence : stupid

  2. showing a lack of intelligence

  3. requiring no intelligence

pretended to be dumb

asking dumb questions

stupid dull dense crass dumb mean lacking in power to absorb ideas or impressions. stupid implies a slow-witted or dazed state of mind that may be either congenital or temporary. dull suggests a slow or sluggish mind such as results from disease, depression, or shock.

verb

  1. to make silent : deaden

would lie around, dumbed by the drugs

noun

  1. dieffenbachia