The most common and most likely answer to this crossword clue is the 9 letter word CONCEITED
C
O
N
C
E
I
T
E
D
More clues leading to the result CONCEITED
Buddy explains!
The straight part
We know that "feeling too much self-importance" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case feeling too much self-importance = conceited.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 CONCEITED mean?
CONCEITED adjective- Having an excessively favorable opinion of one's abilities, appearance, etc.; vain and egotistical.
- Having an ingenious expression or metaphorical idea, especially in extended form or used as a literary or rhetorical device.
- Endowed with fancy or imagination.
- Curiously contrived or designed; fanciful.
- To form an idea; to think.
- To conceive.