The most common and most likely answer to this crossword clue is the 9 letter word DEWY-EYED
I've seen this crossword clue in Independent
D
E
W
Y
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E
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E
D
More clues leading to the result DEWY-EYED
- We’re prepared to go back to the old you, once a little delightful innocent
- Fresh running water in Wales variable: something done to bottle it
- Naive revolutionary married unknown seer and died
- Naive and gullible couple of old solvers died east of 25 in the morning
- Innocent? Got hitched up before end of July, I’d heard
- Why deny picking odd ones? Really looking nostalgic
- We're prepared to go back to the old you, once a little delightful innocent
- Married over the years, looked too trusting
- West Asian surrounded by Yankee leaders is indeed close to tears
- Naive indeed, wife is stuck with unknown middlemen on day's end
Buddy explains!

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 DEWY-EYED mean?
DEWY-EYED adjective- Having eyes with a moist, glistening appearance, especially as indicating that one is on the verge of crying or that one is experiencing strong emotions.
- Naive or innocent in the manner of a child.
- Excessively nostalgic.