The most common and most likely answer to this crossword clue is the 8 plus 5 letter word DRAMATIC IRONY
I've seen this crossword clue in The Times
D
R
A
M
A
T
I
C
I
R
O
N
Y
More clues leading to the result DRAMATIC IRONY
Buddy explains!
The straight part
We know that "Wilde resorted to this" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case wilde resorted to this = dramatic irony.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.