astonished, stunned
Su arrogancia me deja atónito.
His arrogance leaves me stunned.
— Los chicos del coro (2004)
Su humilde actitud hacia un funcionario de poco peso como yo, me dejó atónito.
His humble attitude towards a low-ranking official like myself left me astonished.
— Vivir (1952)
Estaba completamente atónito.
I was completely stunned.
Estoy atónito.
I'm stunned.
— El tiempo contigo (2019)
Me quedé atónito.
I was stunned.