The most common and most likely answer to this crossword clue is the 5 letter word ACHED
I've seen this crossword clue in Financial Times
A
C
H
E
D
More clues leading to the result ACHED
- Companion in A&E, with daughter, felt sore
- Did long account on hard press chief
- Did long moustache droop to some extent?
- Hurt a guerrilla leader and died
- Needed top card holding hearts and diamonds
- A cold that man had caused discomfort
- Bent missing never-ending hurt
- Longed to join soldiers on top, got there
- Long days hurt
- The guy in a music album was sore
Buddy explains!

The straight part
We know that "Did long" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case did long = ached.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 ACHED mean?
ACHED verb- To suffer pain; to be the source of, or be in, pain, especially continued dull pain; to be distressed.
- To cause someone or something to suffer pain.