The most common and most likely answer to this crossword clue is the 7 letter word TOUGHIE
I've seen this crossword clue in Independent
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More clues leading to the result TOUGHIE
- A difficult test match includes duck: I'm disgusted!
- Thug? That’s a tricky question
- This is one item of clothing to cover over yuck
- Almost closed with disgusted expression — that is no easy puzzle
- This water tester I’m disgusted one has broken
- Closed with disgusted exclamation — that is really hard puzzle
- One of these that disgusts me, one having filled in one in ten?
- Violent criminal that’s a difficult problem
- Zero expression of disgust in game or puzzle
- Beside expression of disgust, that is what this is
Buddy explains!

The straight part
We know that "a tricky question" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a tricky question = toughie.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 TOUGHIE mean?
TOUGHIE noun- Something that is tough, or difficult.