The most common and most likely answer to this crossword clue is the 8 letter word BONEHEAD
B
O
N
E
H
E
A
D
More clues leading to the result BONEHEAD
- Book a certain school principal provided for dunce
- Idiot bowled over extremely naive leader
- Wally, of unfixed abode, keeping pecker up
- British individual had consumed drug – dope
- Idiot is some dumb one, he admitted
- Idiot bachelor meets single, senior teacher
- A single male imprisoned by evil idiot
- Stupid person in love had been wandering around
- Nitwit leader getting a token concession up front
Buddy explains!

The straight part
We know that "Stupid person" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case stupid person = bonehead.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 BONEHEAD mean?
BONEHEAD noun- Someone who is stubborn, thick-skulled, or stupid.