The most common and most likely answer to this crossword clue is the 7 letter word HOTHEAD
I've seen this crossword clue in The Daily Telegraph
H
O
T
H
E
A
D
More clues leading to the result HOTHEAD
- Madcap result of strike at end of match?
- Fiery type books into hotel by promontory
- Impetuous type roasting nut
- Oath he’d let out, being a quick-tempered person
- Article in store, not right for impetuous type
- Harry Percy was one sexy leader
- One’s short-tempered, a result of too much sun?
- New leader, fiery type
- Person liable to have violent reaction, as opposed to cold feet?
- Impetuous person gets cold feet? Quite the reverse
Buddy explains!

The straight part
We know that "fiery type" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fiery type = hothead.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 HOTHEAD mean?
HOTHEAD noun- One who angers easily or goes in search of arguments or fights.
- One who reacts quickly and without thinking carefully first