Imbecile /(?)/

Im·be·cile

Imbecile

a.
  1. Destitute of strength, whether of body or mind; feeble; impotent; esp., mentally wea; feeble-minded; as, hospitals for the imbecile and insane.

Imbecile

n.
  1. One destitute of strength; esp., one of feeble mind; -- sometimes used as a pejorative term.
  2. A person with a degree of mental retardation between that of an idiot and a moron; in a former classification of mentally retarded person, it applied to a person with an adult mental age of from four to eith years, and an I.Q. of from 26 to 50. (Psychology)

Imbecile

v. t.
  1. To weaken; to make imbecile; as, to imbecile men's courage. [Obs.]