as·tound·ing 
/əˈstaʊndɪŋ/ adjective
/əˈstaʊndɪŋ/ adjective [more astounding; most astounding] : causing a feeling of great surprise or wonder : amazing, astonishing
▪ Your ignorance is astounding. ▪ He ate an astounding amount of food.
▪ Your ignorance is astounding. ▪ He ate an astounding amount of food.
— astoundingly adjective
▪ Astoundingly, the school decided not to punish him. ▪ an astoundingly successful businessman
▪ Astoundingly, the school decided not to punish him. ▪ an astoundingly successful businessman
