I need a colorful synonym for "dumbfounded" or "baffled". It's on the tip of my tongue. It's a multi-syllable word.
Context: "I checked with xxx and yyy (experts). They were both as dumbfounded as I was by So-and-So's letter, saying they've never heard of a request for m being treated as n.
(An administrator had confused two completely different rights and their legal underpinnings.)
Hornswaggled is the closest so far. (The dictionary I consulted said hornswoggled, and it gave a very different definition.) But I think there's something that's just one notch more mainstream than that, only that I can't remember it.
I'm seeing some suggestions that don't mean the same thing as dumbfounded/baffled. Here's the definition for dumbfounded: "to make speechless with amazement; astonish."
Here's a made-up similar context:
I double-checked with my botany professor. She was as ____________ as I was by your lecture notes, saying she's never seen a maple confused with an oak before.
EDIT: Guys, "hornswaggled/hornswoggled" is colorful. Astonished (for example) is not colorful.