The most common and most likely answer to this crossword clue is the 4 plus 4 letter word HEAR HEAR
I've seen this crossword clue in The Guardian
H
E
A
R
H
E
A
R
More clues leading to the result HEAR HEAR
- I agree to try and try again!
- I approve of the girl drinking vodka, ultimately — same again!
- Present broadcast repeated? Yes!
- I agree to try more than once
- I agree the woman has caught a flightless bird
- Agreed to try and try again
- One try after another elicits an exclamation of approval
- Female’s nursing a big bird? I approve
- That woman’s caging a bird? Absolutely!
- The man, a Romeo, gets the woman to embrace a spoken agreement
Buddy explains!
The straight part
We know that "to express approva" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to express approva = hear hear.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.