The most common and most likely answer to this crossword clue is the 4 plus 3 plus 3 letter word ADAM AND EVE
I've seen this crossword clue in The Daily Telegraph
A
D
A
M
A
N
D
E
V
E
More clues leading to the result ADAM AND EVE
- Gardeners resolved to dig? No time left
- Evaded crooks, accepting a bloke’s credit in part of London
- Believe in West Ham pairing from the beginning
- The original Biblical item? Give credit to those going to Bow Church
- Garden parties?
- Couple who have faith in East London
- Tragic, mad Dane greeting about first father and mother …
- First two fallers in the race
- Believe Cockney, redesigning V&A, made basement in marble
Buddy explains!
The straight part
We know that "Believe in West Ham/pairing from the beginning" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case believe in west ham/pairing from the beginning = adam and eve.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.