The most common and most likely answer to this crossword clue is the 7 letter word ANAGRAM
I've seen this crossword clue in The Guardian
A
N
A
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R
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M
More clues leading to the result ANAGRAM
- In German a grammar feature involving rearrangement
- Eg East Grinstead in relation to its Great Danes?
- What can make user sure?
- Whereof an old-time song here can be Moonlight Serenade?
- One is so tired of editors!
- Puzzle for crossword solvers, perhaps starting point for trainspotting?
- “An Indian city attracting millions” – sort of clue
- Gelding niggled by this horse a sheep defends
- This great novel is one of love that reigns
- Honest sight is 14 20
Buddy explains!

The straight part
We know that "Honest sight is 14 20" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case honest sight is 14 20 = anagram.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 ANAGRAM mean?
ANAGRAM noun- (of words) A word or phrase that is created by rearranging the letters of another word or phrase.
- To form anagrams.