The most common and most likely answer to this crossword clue is the 8 letter word BEFOGGED
B
E
F
O
G
G
E
D
Buddy explains!

The straight part
We know that "Dazed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dazed = befogged.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 BEFOGGED mean?
BEFOGGED verb- To envelop in fog or smoke.
- To confuse, mystify (a person); to make less acute or perceptive, to cloud (a person’s faculties).
- To obscure, make less clear (a subject, issue, etc.).
- Obscured with fog or smoke, murky.
- Caught in fog.
- Confused, muddled.