The most common and most likely answer to this crossword clue is the 9 letter word CONVICTED
I've seen this crossword clue in The Daily Telegraph
C
O
N
V
I
C
T
E
D
Buddy explains!

The straight part
We know that "Given time" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case given time = convicted.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 CONVICTED mean?
CONVICTED verb- To find guilty
- (esp. religious) to convince, persuade; to cause (someone) to believe in (something)