The most common and most likely answer to this crossword clue is the 7 plus 1 letter word MISTER} –
M
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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 MISTER} – mean?
MISTER} – noun- A title conferred on an adult male, usually when the name is unknown. Also used as a term of address, often by a parent to a young child.
- To address by the title of "mister".
- Someone's business or function; an occupation, employment, trade.
- A kind, type of.
- Need (of something).
- Necessity; the necessary time.
- To be necessary; to matter.
- A device that makes or sprays mist.