The most common and most likely answer to this crossword clue is the 5 letter word DAFFY
D
A
F
F
Y
More clues leading to the result DAFFY
Buddy explains!
The straight part
We know that "Silly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case silly = daffy.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 DAFFY mean?
DAFFY adjective- Somewhat mad or eccentric.
- A daffodil.