The most common and most likely answer to this crossword clue is the 5 letter word MUFTI
I've seen this crossword clue in The Guardian
M
U
F
T
I
More clues leading to the result MUFTI
- Plain clothes fit? Um, badly!
- Learned Muslim character from Greece heads two newspapers
- A figure of authority in plain clothes
- Mother trimmed outfit worn by soldier on leave
- Out of military uniform, free to ignore their leaders
- Topless bird poor fit for civvies
- Rig for conductor without forte?
- Church ladies’ outfit to wear off duty
- Religious official sends note round university daily
- Civilian militia, unfit for training, it’s initially …
Buddy explains!

The straight part
We know that "Out of military uniform" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case out of military uniform = mufti.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 MUFTI mean?
MUFTI noun- A Muslim scholar and interpreter of shari’a law, who can deliver a fatwa.
- A civilian dress when worn by a member of the military, or casual dress when worn by a pupil of a school who normally would wear uniform.