The most common and most likely answer to this crossword clue is the 10 letter word CREDITABLE
I've seen this crossword clue in The Daily Telegraph
C
R
E
D
I
T
A
B
L
E
More clues leading to the result CREDITABLE
- Revolutionary appeal in line deserving praise
- Praiseworthy, like money paid into one’s account?
- Worthy Conservative and socialist I put forward
- Honourable guy has tried changing inside
- Telegraph covering left-winger with sex appeal — it’s to be admired
- Conservative and socialist on one board? That’s praiseworthy
- Worthy Lib Dem minister embraces right change
- Good cider brewed on board
Buddy explains!

The straight part
We know that "Good" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case good = creditable.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 CREDITABLE mean?
CREDITABLE adjective- Credible or believable.
- That brings credit or honour; respectable.
- That can be assigned; assignable.