The most common and most likely answer to this crossword clue is the 6 letter word DOCKED
I've seen this crossword clue in Financial Times
D
O
C
K
E
D
More clues leading to the result DOCKED
Buddy explains!
The straight part
We know that "Diminished/Not in the main" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case diminished/not in the main = docked.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 DOCKED mean?
DOCKED verb- To cut off a section of an animal's tail, to practise a caudectomy.
- To reduce (wages); to deduct from.
- To cut off, bar, or destroy.
- To land at a harbour.
- To join two moving items.
- To drag a user interface element (such as a toolbar) to a position on screen where it snaps into place.
- To place (an electronic device) in its dock.
- To pierce with holes, as pricking pastry or dough with a fork to prevent excessive rising in the oven.