The most common and most likely answer to this crossword clue is the 2 plus 3 plus 3 letter word IN THE END
I've seen this crossword clue in The Guardian
I
N
T
H
E
E
N
D
More clues leading to the result IN THE END
- In Yorkshire you will enter hostelry, with a little drink sooner or later
- Mean to welcome ambassador eventually
- Basically mean to keep empty house
- Dine then having cooked at last
- Mean to arrest man, eventually
- Mean man’s captured eventually
- Mean to arrest that man eventually
- On reflection, partaking in absinthe endures
- Male absorbed by plan, ultimately
- Finally hinted obliquely about letter
Buddy explains!

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