if something is amazing.It is an exclamation of surprise, amazement and admiration. It is originally Scottish.
is an interjection used to express amazement, joy, or surprise.
could be used as an interjection to express surprise.
" Are you serious?"
to express surprise, something you find unbelievable or incredible.
Just simply 'incredible' .
" Unbelievable !"
"The mind boggles"
It is used as a reaction to something you find amazing or difficult to understand.