The most common and most likely answer to this crossword clue is the 9 letter word HELL-BENT
H
E
L
L
-
B
E
N
T
More clues leading to the result HELL-BENT
- Determined chap’s going to peak close to Everest
- … determined he will shortly corrupt
- Utterly determined underworld criminal
- Dis-inclination?
- Recklessly determined man, fast pocketing pound
- Very determined, that man will be knight over time
- Unfortunately the bell rings, ending in decision becoming dead intent
- Determined to find an extremely hot place that's corrupt
Buddy explains!

The straight part
We know that "becoming/dead intent" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case becoming/dead intent = hell-bent.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 HELL-BENT mean?
HELL-BENT adjective- Recklessly determined to do or achieve something