The most common and most likely answer to this crossword clue is the 7 letter word NAÏVETÉ
I've seen this crossword clue in The Guardian
N
A
V
E
T
More clues leading to the result NAÏVETÉ
- Greenness of mineral water upset over ends of table
- Innocence I found in part of church, note
- Simplicity one found in part of church, note
- Artlessness of first-class surgeon in Newcastle area
- Inexperience of amateur seen in event I arranged
- In Genesis, Eve ain’t displaying innocence
- Simplicity I have found in nature, abandoning old city
- Innocence about alien French commune
- 7 in a foreign check point
- Article that’s returned I check. Easy for starters, simplicity itself
Buddy explains!
The straight part
We know that "7/7" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case 7/7 = naÏvetÉ.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 NAÏVETÉ mean?
NAÏVETÉ noun- Lack of sophistication, experience, judgement or worldliness; artlessness; gullibility; credulity.