Cryptic crossword clue
Doing cocaine and becoming excited

The most common and most likely answer to this crossword clue is the 8 letter word CHEATING

I've seen this crossword clue in The Times
C
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A
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Buddy explains!

The straight part
We know that "Doing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case doing = cheating.
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 CHEATING mean?

CHEATING verb
  1. To violate rules in order to gain advantage from a situation.
  2. To be unfaithful to one's spouse or partner.
  3. To manage to avoid something even though it seemed unlikely.
  4. To deceive; to fool; to trick.
CHEATING noun
  1. An act of deception, fraud, trickery, imposture, imposition or infidelity.
  2. The arrangement of people or items in a film so as to give the (false) impression that shots are taken from different angles in the same location.
CHEATING adjective
  1. Unsporting or underhand.
  2. Unfaithful or adulterous.

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