The most common and most likely answer to this crossword clue is the 17 letter word INÂ THEÂ ALTOGETHER
I've seen this crossword clue in The Guardian
I
N
Â
T
H
E
Â
A
L
T
O
G
E
T
H
E
R
Buddy explains!

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