The most common and most likely answer to this crossword clue is the 8 letter word CLUELESS
I've seen this crossword clue in Independent
C
L
U
E
L
E
S
S
More clues leading to the result CLUELESS
- Having no idea what I want to do after retirement
- Inaccurate description of crossword in 1995 film
- You’re certainly not this stupid!
- Stupid solver given no chance then?
- Unaware your challenge can’t be completed
- Set fewer crosswords? That’s stupid
- Foolish crook sells cue
- Not all there, unlike this puzzle
- Compared with a crossword, Sudoku is so idiotic
- Ill-informed advice to the over-prolific crossword compiler?
Buddy explains!

The straight part
We know that "Ill-informed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ill-informed = clueless.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 CLUELESS mean?
CLUELESS adjective- Lacking knowledge or understanding; uninformed.
- Without any clues or hints.