The most common and most likely answer to this crossword clue is the 3 plus 3 letter word RUN DRY
R
U
N
D
R
Y
More clues leading to the result RUN DRY
- . Without water supply year after river under bridge finally disappeared
- Stop producing rehearsal after first half droops completely
- Have no more water – divers getting new start!
- After change of leader, several become exhausted
- Reach the end of rehearsal having exchanged words?
- Separate rule for Sweden to come to an end
Buddy explains!

The straight part
We know that "to come to an end" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to come to an end = run dry.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.