The most common and most likely answer to this crossword clue is the 11 letter word PRESENTABLE
I've seen this crossword clue in The Times
P
R
E
S
E
N
T
A
B
L
E
Buddy explains!

The straight part
We know that "thus" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case thus = presentable.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 PRESENTABLE mean?
PRESENTABLE adjective- In good enough shape to be shown or offered to other people; tidy; attractive.
- Capable of being presented to a church living.