The most common and most likely answer to this crossword clue is the 6 letter word SELDOM
I've seen this crossword clue in Independent
S
E
L
D
O
M
More clues leading to the result SELDOM
- Some damsel, domesticated rarely
- Models misshapen? Not often
- Once in a blue moon, old master goes wrong, turning out bad art
- Very little reworking of models
- Diggers returned carrying diamonds rarely
- Rarely finding the Spanish involved in rise of 60’s teenage faction
- Labour leader wearing retro styles rarely
- Rarely hose cold room – never front half
- Rarely makes new models
- Spies going north to trap democrat once in a while
Buddy explains!

The straight part
We know that "Rarely" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rarely = seldom.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 SELDOM mean?
SELDOM adjective- Rare; infrequent.
- Infrequently, rarely.