n.
Pronunciation: ' im-b ə -s ə l, - ˌ sil
Function: noun
Etymology: French imbécile, noun, from adjective, weak, weak-minded, from Latin imbecillus
Date: 1802
1 usually offensive : a person affected with moderate mental retardation
2 : FOOL , IDIOT
– imbecile or im · be · cil · ic \ ˌ im-b ə - ' si-lik \ adjective