The most common and most likely answer to this crossword clue is the 6 plus 3 letter word SPOKEN FOR
I've seen this crossword clue in Independent
S
P
O
K
E
N
F
O
R
More clues leading to the result SPOKEN FOR
- Engaged, made speech in favour
- Engaged person OK to dance, embracing female
- Reserved little man meeting female, overwhelmed by scent
- Broadcast on perks of being romantically attached
- Engaged in fixing Ken’s roof with a piece of PVC
- Track about boy with female, romantically attached
- Chatted in favour of being romantically attached?
- Engaged part of wheel, front almost spinning
- Trail around forlornly at first after Barbie’s boyfriend — is he or isn’t he?
- Funny person embracing female gaining approval to be engaged informally
Buddy explains!
The straight part
We know that "Already taken delivery of 4 (6,3)/Already taken" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case already taken delivery of 4 (6,3)/already taken = spoken for.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.