The most common and most likely answer to this crossword clue is the 7 letter word CHANCER
I've seen this crossword clue in The Times
C
H
A
N
C
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R
More clues leading to the result CHANCER
- Opportunist appearing in court, shortly
- Opportunist in part of church changing direction
- Unscrupulous type in court. No conclusion reached
- Sign over hotel is a dubious one
- Opportunist finds sign about heroin
- Opportunist ultimately lost in court
- He takes a risk, flipping over side of ulcer
- Self-interested type takes hours to penetrate group of stars
- Provider of tales new for all to see, an opportunist?
- Opportunist in part of church changing side in the end
Buddy explains!

The straight part
We know that "Unscrupulous type" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case unscrupulous type = chancer.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 CHANCER mean?
CHANCER noun- A scheming opportunist.