The most common and most likely answer to this crossword clue is the 7 letter word ASTOUND
I've seen this crossword clue in Financial Times
A
S
T
O
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D
More clues leading to the result ASTOUND
- A street dog not the first to bring surprise
- Desperate Dan’s out to shock
- Bowl over, and opener for Somerset out, regrettably
- Dust on a relaid floor
- Bewilder leader of traders employed by a firm
- Surprise about German joiner
- A noise surrounding onset of traumatic shock
- Shock: divas to undress, partly
- Stagger around street, coming in for resistance
- A safe boxing tactic’s first to stun
Buddy explains!

The straight part
We know that "Bewilder" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bewilder = astound.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ASTOUND mean?
ASTOUND verb- To astonish, bewilder or dazzle.
- Stunned; astounded; astonished.