id ‧ i ‧ ot S3 /ˈɪdiət/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: Latin ; Origin: idiota 'person who knows nothing' , from Greek idiotes 'private person, person who knows nothing' , from idios 'own, personal, private' ]
1 . a stupid person or someone who has done something stupid:
It was all your fault, you idiot.
2 . old use someone who is mentally ill or has a very low level of intelligence
—idiotic /ˌɪdiˈɒtɪk◂ $ -ˈɑːt-/ adjective :
Stop asking such idiotic questions.
—idiotically /-kli/ adverb