The most common and most likely answer to this crossword clue is the 5 plus 5 letter word STARK NAKED
I've seen this crossword clue in The Guardian
S
T
A
R
K
N
A
K
E
D
More clues leading to the result STARK NAKED
- Having nothing on, Keats drank bubbly
- Uncovered bet about old vessel reaching pole
- Drake’s tank slipped out of gear
- Undressed wound requires injection of potassium salt first
- Completely out of gear
- Risked covering chest when finally in the buff
- Nude, ogled outside zero-carbon facility
- Description of a person in a birthday suit?
Buddy explains!
The straight part
We know that "out of gear" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case out of gear = stark naked.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.