The most common and most likely answer to this crossword clue is the 4 plus 2 letter word EVEN SO
I've seen this crossword clue in Financial Times
E
V
E
N
S
O
More clues leading to the result EVEN SO
- Still square and homosocial essentially
- Despite that 50/50 bet, nothing!
- What's yet to come from Stevenson?
- Maybe two, four, six and zero still
- Still huge and certainly not shrinking, seen from behind
- Tip of elbow nurse must keep very, very still
- Still not odd then
- Quits job, taking away tips nevertheless
- Oscar quits first, nevertheless
- Stevenson’s written about still
Buddy explains!

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