The most common and most likely answer to this crossword clue is the 8 letter word BUSINESS
I've seen this crossword clue in The Guardian
B
U
S
I
N
E
S
S
More clues leading to the result BUSINESS
- Firm sort of wave in middle of kiss
- Concern with bus in Essex dropping last two off
- Woman of opera keeps crossword compilers in employment
- Maybe show concern
- Doctor Seuss book about hot affair
- Company head goes by public transport, a north-south line
- One head backing transport company
- Company relationships in public transport
- Company functions in public transport
- Elizabeth dresses American in outfit
Buddy explains!

The straight part
We know that "Maybe show/concern" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case maybe show/concern = business.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 BUSINESS mean?
BUSINESS noun- A specific commercial enterprise or establishment.
- A person's occupation, work, or trade.
- Commercial, industrial, or professional activity.
- The volume or amount of commercial trade.
- One's dealings; patronage.
- Private commercial interests taken collectively.
- The management of commercial enterprises, or the study of such management.
- A particular situation or activity.
- Any activity or objective needing to be dealt with; especially, one of a financial or legal matter.
- Something involving one personally.
- (parliamentary procedure) Matters that come before a body for deliberation or action.
- (travel) Business class, the class of seating provided by airlines between first class and coach.
- Action carried out with a prop or piece of clothing, usually away from the focus of the scene.
- The collective noun for a group of ferrets.
- Something very good; top quality. (possibly from "the bee's knees")
- Excrement, particularly that of a non-human animal.
- Of, to, pertaining to or utilized for purposes of conducting trade, commerce, governance, advocacy or other professional purposes.
- Professional, businesslike, having concern for good business practice.
- Supporting business, conducive to the conduct of business.