The most common and most likely answer to this crossword clue is the 5 letter word NINNY
I've seen this crossword clue in The Daily Telegraph
N
I
N
N
Y
More clues leading to the result NINNY
- Silly accommodation in US state
- Simpleton’s lodging-place in US city
- Fool suggesting somewhere to eat in Times Square?
- Figure having third name for film is silly
- New pub, unknown quantity for buffoon
- Bar in US city supplying dope
- 16 Silly Billy — name in case of necessity
- Mug from hotel in New York
- Dope available from bar in New York
- . Fool hotel in New York
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 NINNY mean?
NINNY noun- A silly or foolish person.