The most common and most likely answer to this crossword clue is the 9 letter word INTERVENE
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More clues leading to the result INTERVENE
- Get involved in a day to celebrate trainee nurses
- Step in when Bury against Everton ends ultimately in violence
- Get involved with gross revenue unit? Not us!
- Step in time with Eve ‘n’ Erin’s dancing
- Get involved in free event the Queen puts on
- Step in to bury archdeacon with earl
- Get involved with some painter, Venetian?
Buddy explains!

The straight part
We know that "Step in" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case step in = intervene.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 INTERVENE mean?
INTERVENE verb- To become involved in a situation, so as to alter or prevent an action.
- To occur, fall, or come between, points of time, or events.
- To occur or act as an obstacle or delay.
- To say (something) in the middle of a conversation or discussion between other people, or to respond to a situation involving other people.
- To come between, or to be between, persons or things.
- In a suit to which one has not been made a party, to put forward a defense of one's interest in the subject matter.