The most common and most likely answer to this crossword clue is the 7 letter word EVINCES
I've seen this crossword clue in The Guardian
E
V
I
N
C
E
S
More clues leading to the result EVINCES
Buddy explains!
The straight part
We know that "Clearly shows" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case clearly shows = evinces.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 EVINCES mean?
EVINCES verb- To show or demonstrate clearly; to manifest.