The most common and most likely answer to this crossword clue is the 9 letter word INTRUSIVE
I've seen this crossword clue in Independent
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More clues leading to the result INTRUSIVE
- Revisit UN building uninvited?
- Like a trespasser, confusing sin with virtue
- Its disturbing when virtue and sin are confused
- Disturbing to confuse sin with virtue
- I ruin vest, clumsily shoving nose in?
- At home, constant strain sounds disturbing
- Confuse virtue with sin like a nosey parker
- Meddlesome at home — endless responsibility yours truly has
Buddy explains!

The straight part
We know that "shoving nose in?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case shoving nose in? = intrusive.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 INTRUSIVE mean?
INTRUSIVE noun- An igneous rock that is forced, while molten, into cracks or between other layers of rock
- Tending to intrude; doing that which is not welcome; interrupting or disturbing; entering without permission or welcome.
- Of rocks: forced, while in a plastic or molten state, into the cavities or between the cracks or layers of other rocks.