The most common and most likely answer to this crossword clue is the 4 plus 6 letter word PASS MUSTER
I've seen this crossword clue in The Daily Telegraph
P
A
S
S
M
U
S
T
E
R
More clues leading to the result PASS MUSTER
- Do no more about problems raised by Queen
- Before ruler, fathers and sons have to meet the standard
- Measure up Spurs teams for a complete makeover
- Remoulded spares coming round have to meet a required standard
- To be good enough at sums, reps will need to be trained
- I don’t know – does hospital drama have to be just about acceptable?
- Mass erupts frenziedly to meet standards
- Player who’s throwing outside has to be rated OK
- Dope in Manali, primarily purest, going wild in do
- Advance requirement in front of Her Majesty has to be acceptable
Buddy explains!
The straight part
We know that "to be acceptable" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to be acceptable = pass muster.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.