The most common and most likely answer to this crossword clue is the 8 letter word AFFECTED
I've seen this crossword clue in The Daily Telegraph
A
F
F
E
C
T
E
D
More clues leading to the result AFFECTED
- Moved camp?
- Moved camp
- Had an impact on camp
- Pretentious fellow in exotic cafe, male with quiff?
- Pretentious cafe gets deft renovation
- Moved to be insincere
- Overcome being pretentious
- Poor cadet welcoming unlimited offer is not genuine
- Pretentious cafe — fed excitedly, with time to tuck in
- Studied what could be achieved with new leader
Buddy explains!

The straight part
We know that "Overcome/being pretentious" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case overcome/being pretentious = affected.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 AFFECTED mean?
AFFECTED verb- To influence or alter.
- To move to emotion.
- Of an illness or condition, to infect or harm (a part of the body).
- To dispose or incline.
- To tend to by affinity or disposition.
- To assign; to appoint.
- To make a show of; to put on a pretense of; to feign; to assume. To make a false display of.
- To aim for, to try to obtain.
- To feel affection for (someone); to like, be fond of.
- To show a fondness for (something); to choose.
- Someone affected, as by a disease.
- Influenced or changed by something.
- Simulated in order to impress.
- Emotionally moved; touched.
- Adfected.
- Resulting from a mostly negative physical effect or transformation.
- Artificial, stilted