The most common and most likely answer to this crossword clue is the 7 letter word AVERRED
I've seen this crossword clue in The Guardian
A
V
E
R
R
E
D
More clues leading to the result AVERRED
- A word we hear in a German accent? So it's alleged
- Stated a word as a German might say it?
- Declared Authorised Version was inaccurate
- Declared a number was incorrect
- Declared a vicar initially made a mistake
- Maintained a voter originally made a mistake
- Declared a number were incorrect
- Claimed Bible was wrong
- Maintained the Bible was wrong
- Pronounced a little slaver ‘redeemable’
Buddy explains!

The straight part
We know that "Declared /Declared" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case declared /declared = averred.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 AVERRED mean?
AVERRED verb- To assert the truth of, to affirm with confidence; to declare in a positive manner.
- To prove or justify a plea.
- To avouch, prove, or verify; to offer to verify.