The most common and most likely answer to this crossword clue is the 3 plus 2 letter word DIG UP
I've seen this crossword clue in Independent
D
I
G
U
P
More clues leading to the result DIG UP
- With effort, get to like travelling to the city
- Revolting dog I would turn out of the ground
- Hunt out doing jumps in odd positions
- Find papers backed head of government in revolt
- When searching, discover dog tag, folded over
- Find grub, oddly in sink
- Unearth grub, oddly, during slump
- Produce rejected doggy passport?
- A small dog I had reared to track down
- Uncover extremes of in-fighting hidden by party
Buddy explains!

The straight part
We know that "Uncover" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case uncover = dig up.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.