The phrase "astonishing guy" is correct and usable in written English.
It can be used to describe a man who is surprising or impressive in some way.
Example: "Everyone in the office was talking about him; he truly is an astonishing guy with his innovative ideas."
Alternatives: "amazing man" or "incredible guy".
"I don't think he's right for the part, but he's an astonishing actor, that guy".
"I think the guy is astonishing, truthfully". So do his 23,600 followers on Twitter, which he calls "the agora of the 21st century," who know him for his snappy language-related interventions.
"It's the most eccentric restaurant in history... a Sikh guy cooking this astonishing sous-vide stuff on an industrial estate in Nottingham.
It's continuously astonishing to me that these guys are still oblivious to the existence of the internet, which, seemingly to their dismay, contains a complete record of remarks that thoroughly debunk these declarative lies.
Whatever Adria really meant, and with all due respect to his astonishing food - somebody strap this guy into a set of headphones, get him up onto www.playingforchange.com for five minutes, and then ask him if he'd like to change his mind.
This guy's talent is astonishing and "One Man Newsies: Disney's Newsies Broadway Medley" is yet another example of it.
Colin Hanks is very good in Fargo, but he was great a couple of years ago in The Good Guys, starring opposite Bradley Whitford's astonishing moustache.
Your boyfriend wants you to meet the guy who keeps him alive via astonishing amounts of beans and cheese.
Besides, who's complaining when the guy continues to churn out such an astonishing, distinctly nonconformist discography?
Spano, who now lives in Ohio, where he works as a salesman, was, to them, a curiosity, the owner who wasn't, the guy who had nearly pulled off an astonishing scam.
