The most common and most likely answer to this crossword clue is the 13 letter word CORRESPONDENT
I've seen this crossword clue in The Times
C
O
R
R
E
S
P
O
N
D
E
N
T
More clues leading to the result CORRESPONDENT
- Reporter runs into person cited in divorce proceedings
- Reporter’s right to interrupt person cited in divorce case
- Journalist redrafted second report around middle of evening
- With maximum speed, somehow send on report as journalist
- Agreeing with second report revised to include Norway
- Nerd soon crept out to find reporter
- Wow! One who answers to journalist
- Suitable pen-friend?
- One cited in divorce describes Romeo as pen pal, perhaps
Buddy explains!

The straight part
We know that "Reporter" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case reporter = correspondent.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 CORRESPONDENT mean?
CORRESPONDENT noun- Someone who or something which corresponds.
- Someone who communicates with another person, or a publication, by writing.
- A journalist who sends reports back to a newspaper or radio or television station from a distant or overseas location.
- Corresponding; suitable; adapted; congruous.
- (with to or with) Conforming; obedient.