Tonto and estupido both mean dumb or stupid in Spanish. However, if you're referring to a girl, replace the o on the end with an a. "Tu eres tonto" means "you're stupid".
it means you are silly/stupid
Siento pena porque tú eres muy tonto = I feel sorry because you're so dumb
You are so much. If you say "Tu eres tonto", it would be "you are dumb or foolish."
tonto tu eres/estas es tonto you are foolish
Sí, eres un tonto.
Tú eres = You are
what are you?
It means "You are stupid"
de donde eres = where are you from
you are
That I am a fool