The most common and most likely answer to this crossword clue is the 6 letter word CLOTHE
I've seen this crossword clue in Financial Times
C
L
O
T
H
E
More clues leading to the result CLOTHE
- Sale item charges 60% of cheap dress
- . Idiot ambassador’s dress
- Emptied cocktail over the dress
- Reluctant to appear in church robe
- Chump, male, modelling dress
- Occasionally call out that fellow as cover
- Reluctant to put on church robe
- Dress of clergy
- Fool with high explosive makes for cover
- Unwilling to be clad in Anglican dress
Buddy explains!

The straight part
We know that "robe" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case robe = clothe.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 CLOTHE mean?
CLOTHE verb- To adorn or cover with clothing; to dress; to supply clothes or clothing.
- To cover or invest, as if with a garment.